The Inquiry

On 30 June this year, a study was released in one of the world's top scientific journals. It explained how a group of scientists who had been measuring the amount of ozone in the stratosphere had made a startling observation - the hole in the ozone layer had shrunk. Here, they said, was the first, clear evidence that the ozone layer had begun to heal. So how did this happen? It is a story that involves dogged scientific endeavour, the burgeoning green movement of the 1980s and the signing of what has been described as the most successful treaty ever created. (Photo: Severe thinning of Earth's protective ozone layer found over Antarctica, by Nasa scientists. Credit: Getty Images)

After more than 50 years of armed conflict that has left 200,000 dead and millions displaced, Colombia is on the brink of peace. A final deal between the government and the Farc guerrilla movement is expected to be signed soon. Thousands of armed fighters will then lay down their weapons in preparation for reintegration into a society from which they have been estranged for years. But the process will not be easy – for the Farc’s fighters, or for the rest of Colombian society. (Photo: Fighters of the Front 53, a faction of the leftist Revolutionary Armed Forces of Colombia (Farc) guerrilla movement, in Los Alpes, 150km south-east of Bogota. Credit: Getty Images)

“Brexit means Brexit,” says Theresa May, Britain’s new prime minister. It sounds pretty unequivocal: the UK voted in a referendum to leave the European Union, so that’s what it must do. But credible figures from US Secretary of State John Kerry to former prime minister Tony Blair have suggested that Brexit may not actually happen. Is that – legally, politically, democratically – possible? The Inquiry has the answer.Presenter: Maria Margaronis(Photo: Illustration flags of the European Union and the Union flag sit on top of a sand castle on a beach in Southport, United Kingdom. Credit to Getty images)

Donald Trump has shocked the US political establishment by knocking out every other Republican candidate to become his party’s presumptive candidate for President. Does he have a realistic shot of taking the White House? His campaign is short of money and some senior Republicans are refusing to endorse him. Current polls suggest his chances are slim. But his message has found an audience other politicians have failed to reach – he has become a lightning rod for many disaffected Americans. So, our question this week, can Trump win? Presenter: Helena Merriman(Photo: Donald Trump, presidential candidate 2016. Credit: Getty Images)

The $5bn settlement recently agreed by Goldman Sachs is the latest in a long list of multi-billion dollar fines paid by banks implicated in the 2008 financial crisis. But behind these giant corporations are individual bankers, taking everyday decisions. It is those decisions which really matter. If you could find a way to nudge bankers towards better and safer choices, building a culture of integrity, you might avoid future financial trouble. But can you make bankers behave better? Taking evidence from witnesses including a Goldman Sachs insider and a regulator deploying psychologists in banks, The Inquiry looks for an answer.(Photo Montage: Bankers/Stock market charts/City of London. Credit to Getty)

The UK has voted to leave the EU, sending shockwaves through Britain’s political class and its economy. Whatever the fate of Britain – and many fear years of damaging instability – Brexit is a serious blow to the European Union. Britain is far from the only member state with doubts about the scope of the European project. There are strong Eurosceptic movements in many other nations too. Some think the British precedent will boost their influence or that other nations will be able to use the threat of exit to undermine shared decision-making. And the loss of Britain – which is still, for now, Europe’s second-largest economy – could leave the Union precariously unbalanced, with Germany too dominant within it. As the EU contemplates an uncertain future, we are asking whether the EU even has a future without the United Kingdom. Presented by Chris Bowlby.(Photo: David Cameron, Chancellor Angela Merkel, Bulgarian Prime minister Roesen Plevneliev, Eurozone finance ministers with bank notes, euro coins and a map of Europe in the background. Credit: Getty Images)

Hillary Clinton is the odds-on favourite to be the next president of the USA. But polls show more and more Americans view her unfavourably. In fact, the public's hostility towards her is record-breaking. Only Donald Trump elicits greater antipathy. That’s perhaps less surprising. He is a political outsider, and a divisive figure. But why does Hillary Clinton - a mainstream, centrist politician - provoke such strong, negative feelings? Presenter: Helena Merriman(Image: Montage of Democratic presidential candidate Hillary Clinton with a sign 'Hillary You Liar')

“More than half the people of the world are living in conditions approaching misery,” declared President Truman at his second inauguration. “For the first time in history, humanity possesses the knowledge and skill to relieve the suffering of these people.” That was 1949.It is a claim we have heard many times since - that ending poverty is within our grasp. But it is a dream which has - despite decades of effort - eluded us. Now the United Nations has set a new target - to eradicate extreme poverty by 2030. Will it be different this time?We have already come a long way. For the first time in history fewer than 1 in 10 people are poor around the world. A billion people have been lifted out of extreme poverty since 1990. But achieving the UN's new goal means reaching another 836 million people in the next 14 years. And that will be tough. Are we really about to end world poverty? Our experts include an economics professor who was himself born into poverty in China, and Helen Clark, who hopes to be the next leader of the United Nations.

Some 92% of married Egyptian women aged between 15-49 have had their genitals cut. FGM is more common in Egypt than anywhere else in the world. These astonishing statistics are all the more surprising when you consider that Egypt banned the practise in 2008. So why is FGM so prevalent in Egypt? Four expert witnesses tell us about the challenge of turning a widely-followed tradition into a crime.(Photo: A gynaecologist co-operating with the Coptic Center for Training and Development gives a lecture on Female Genital Mutilation (FGM) in a village close to Beni Sueif, south of Cairo. Credit: Getty Images)

The World Health Organisation says the number of cancer cases will rise by 70% over the next 20 years. A huge amount of effort and money is spent fighting the disease. But are we getting that fight right? In this special hour-long edition of The Inquiry four expert witnesses tell us new ideas are being stifled, that there is not enough money being spent on drugs to treat early-stage cancer and that we are not doing enough to stop people from getting cancer in the first place. We put that evidence to someone in a position to do something about it - Dr Francis Collins, director of the US National Institutes of Health, the world's largest biomedical research agency, with a budget of $32 billion.(Photo: Lab Technician preparing protein. Credit: Reuters)

The 1951 UN Refugee Convention was forged at a time when the world was recovering from a global war which had displaced vast numbers of people. Sixty-five years on, it is still the benchmark for refugee rights. But as the world grapples with a new refugee crisis, many think it's no longer up to the job. So – our question this week – would a new international convention help refugees?Presenter: James Fletcher(Image: Refugees push each other as they wait for tents, as Syrians flee the northern embattled city of Aleppo in Bab al-Salama, near the city of Azaz, northern Syria, near the Turkish border crossing. Credit to Getty)

The rich world has got used to health and longevity getting better, and death rates falling – for everyone. But over the past few years data has been accumulating which suggests that this trend has stopped for poorly educated, white Americans. And for one group in particular - middle-aged women – death rates are going up. It’s a shocking finding, meaning many will die at a younger age than their mothers. What’s happening? Certainly, life is tough for many low-income American families. “What the data look like,” says the economist Paul Krugman, “is a society gripped by despair, with a surge of unhealthy behaviours and an epidemic of drugs.” Is he right? Are the conditions of working class life in America killing white women?Presenter: James Fletcher(Image: A cemetery in Gloucester, Massachusetts. Credit: Getty Images)

In June, the UK will vote on whether to become the first country ever to leave the European Union. Anti-EU political parties are on the rise across the continent. In April, the Dutch people rejected an EU agreement with Ukraine. Even the president of the European Commission admits that "the European project has lost parts of its attractiveness". But what is that project? And has it lost its shine? The Inquiry goes in search of the vision that inspired the EU’s founders and - with expert witnesses from Ireland, Denmark, the Netherlands and Germany - asks: what happened to the European dream? (Photo: French Minister of Foreign Affairs Robert Schuman signs the official treaty of the Schuman Plan in 1951, which created the European Coal and Steel Community. Credit: Getty Images)

It is a surprisingly simple idea - to end long-term homelessness, give every person living on the streets a home. It can also be surprisingly effective. Medicine Hat, a city in Canada, recently became the first city to end homelessness in this way. The approach is known as Housing First, and – unlike many other homelessness initiatives – it does not require homeless people to make steps towards solving other issues like alcoholism, mental health problems or drug addiction before they get a home. But is this approach solving the problem, or simply moving it off the streets?(Image: A homeless man with his dog outside a building. Credit to Getty)

For decades researchers, academics and psychologists have wanted to know what kind of person becomes a terrorist. If there are pre-existing traits which make someone more likely to kill for their beliefs – well, that would be worth knowing. In this edition of The Inquiry – part of the BBC World Service Identity Season – we tell the story of that search for a ‘terrorist type’. It’s a story which begins decades ago. But, with the threat from killers acting for so-called Islamic State, finding an answer has never felt more pressing.(Photo: Somali soldiers stand at the scene of car bomb at a restaurant in Mogadishu, 2016. Militant Islamist group al-Shabab claimed responsibility for the attack. Credit: Getty Images)

Gender identity is considered more fluid than ever because of the success of the trans movement. But most trans people, just like everyone else, still identify as either a man or a women. For those who feel they are neither – or both – the male/female distinction does not fit. And for the one in 2000 who are born with indeterminate sex, finding a place in this binary world can be damaging. We hear from Dr Imran Mushtaq, who works with intersex children at Great Ormond Street Hospital in London; bi-gender vlogger Brin Convenient; Tamara Adrian, Venezuela’s first transgender congresswomen (who wants gender erased from official forms); and the writer Mark Gevisser.This programme is part of the World Service Identity Season.(Photo: Transgender transsexual concept. Credit: Thinkstock by Getty Images)

A deadly al-Qaeda attack on an Ivory Coast resort town in March reminded the world that the terror network once led by Osama bin Laden has not gone away. But in recent years it has been eclipsed and diminished by the so-called Islamic State group. IS has attracted not just global attention, but fighters and funds too. So how depleted is the group which in 2001 triggered America’s “global war on terror”? In other words: what happened to al-Qaeda?Presenter: Helena Merriman(Photo: A fighter is seen standing in front of an image of Osama bin Laden, the late head of al-Qaeda, in the town of Rada. Credit: Getty Images)

Most research places Mexico at the top of the chart when it comes to the consumption of sugary drinks – by some estimates, they get through half a litre per person every day. Mexico also has some of the highest rates of obesity and diabetes in the world, exacerbated by their love of sugar sweetened beverages. To understand why, we look at how Coca-Cola became the country’s most popular fizzy drink brand, seen everywhere from sports fields to religious ceremonies. We explore the role the country’s poor water quality plays, and ask whether a tax on sugary drinks is helping Mexicans change their habits.(Photo: A variety of fizzy drinks stocked on a shelf in a shop. Credit: Getty Images)

They are at once the most predictable and unpredictable killers. We know continent-sized slabs of earth are moving beneath our feet. We know they move at a speed that is often harmless - the same rate as our fingernails grow. But sometimes, without warning, they can slip tens of metres in a second - and bring down whole cities. About a million people have died in earthquakes in the last two decades, most in a handful of huge quakes in urban areas. Yet the populations of cities at risk continue to grow. So, how can we quake-proof a city?(Photo: A general view shows excavator vehicles and rescue workers in front of a building which collapsed in the 6.4 magnitude earthquake, in the southern Taiwanese city of Tainan early on 9 February, 2016. Credit: Getty Images)

Pay packets in developed economies have hardly grown in decades. Economic output and the number of people in jobs have both improved since the global downturn. But with income levels failing to rise, ordinary workers aren't feeling the benefit. And for many, the good times were over long before the 2008 financial crash.In this edition of The Inquiry we hear from experts in the three largest economies to have suffered flat wage growth in recent years: Japan, Germany and the US. What lies behind the experience in each country – and can those answers help to explain the wider phenomenon?Presenter: Linda Yueh

The clash between Apple and the FBI is the latest battle in a century-long conflict over the power to keep secrets. The FBI wants Apple to build a “backdoor to the iPhone” so that it can read encrypted data on a locked phone used by one of the San Bernadino attackers. Apple says such a backdoor would be the equivalent of “a master key, capable of opening hundreds of millions of locks”. Creating such a key, Apple says, would “undermine decades of security advancements”. Cryptography was once controlled by the state, which deployed it for military and diplomatic ends. But in the 1970s, long-haired hippy Whitfield Diffie came up with what has been described as the most revolutionary concept in encryption since the Renaissance. Diffie’s invention took the keys away from the state and marked the start of the ‘Crypto Wars’ – the fight for the right of individuals and companies to communicate beyond the gaze of government agencies. The Inquiry tells the compelling story of the ongoing encryption war, taking evidence from expert witnesses including Whitfield Diffie himself. (Photo: Rally support for Apple refusal to help FBI. Credit: EPA Wires)

Bashar al-Assad and his Syrian National Army appear to have the upper hand. The president has the momentum in a civil war that has raged for five years. It is a very different picture from that of 2011, when a wave of popular protests spread through the country and the international community demanded Mr Assad’s resignation as his army brutally crushed demonstrations. At home, he remains in the presidential palace, supported by his inner circle. Russian air strikes and support from Iranian Revolutionary Guards have helped the Syrian leader win key battles. And on the international stage, the threat from so-called Islamic State and the role of jihadi groups within the opposition have caused those countries which wanted him gone to consider whether that remains a viable policy. So, has President Assad won?(Photo: President Assad makes a speech. Credit: AP)

Mosquitoes are the most dangerous animals on the planet. They spread diseases - malaria, dengue and zika – that kill huge numbers of people and cause suffering to many more.So why not eradicate them?It wouldn’t be easy. Scientists in Mali have found the mosquito is a surprisingly formidable foe, able to hide for months and evade capture. Other scientists are working on genetically-modifying mosquito populations so that they can’t breed.But could releasing these re-modelled mosquitoes have unintended consequences? And might we accidentally destroy ecosystems by removing mosquitoes altogether? It turns out this tiny creature presents us with huge practical and ethical problems. Presenter: Michael Blastland(Image: Fumigation against the Aedes aegypti mosquito. Credit AFP/Getty)

At 4pm on 6 October 2008, as the global financial crisis ravaged Iceland’s economy, its prime minister addressed the nation. "There is a danger, fellow citizens," he said, "that Iceland could be sucked into the whirlpool and the result could be national bankruptcy. It was decided this morning to suspend trading with the banks. God Bless Iceland.” The message was clear. Iceland was about to do what no other country had done - let its banking sector fail. And that was only the start. Over the coming years, Iceland would go on to do much more - clean up its banks and prosecute many senior bankers. And the story is still unfolding. Just two months ago, five more bank executives were jailed. So how exactly has Iceland done it? What happened next to Iceland’s economy? And why aren’t other nations following Iceland’s example?(Photo: Protest against the Icelandic government 29 November 2008 in Reykjavik. Credit AFP/Getty Images)

The World Health Organisation says the number of cancer cases will rise by 70% over the next 20 years. A huge amount of effort and money is spent fighting the disease. But are we getting that fight right? One leading oncologist, Vincent DeVita, tells us the nature of modern medical research and oversight means we are not able to benefit as much as we might from the extraordinary clinical tools we have at our disposal. Another expert witness, professor Heidi Williams from MIT, describes research which shows incentives for drug companies promote short term gains over treatments that could cure early stage cancers. Dr Christopher Wild from the WHO says it does not make sense to spend most of the cancer research budget on cures when up to 40% of cancers are preventable. And, Pekka Puska, a pioneer in the world of public health, explains how communities can make big changes and prevent many cases of lifestyle-related cancers.(Photo: Lab Technician preparing protein, Credit: Reuters Archive)

When President Obama wept at a recent press conference to announce action on gun control, his tears might have been born of frustration as well as sadness. Despite frequent mass-shootings, events which some might think would strengthen the case for tighter gun laws, it is difficult for any politician or party to change the rules on gun ownership in the US. One organisation is often credited with, or blamed for that - the National Rifle Association, or NRA. This programme is not about the arguments over gun control but about the NRA itself. Few could dispute its success. Even if one allows for the possibility that it reflects the public mood, rather than shapes it, it has unquestionably changed the gun debate in Washington DC. So how has it done it? Former NRA insiders recall how the NRA was transformed from a hunting and marksmanship club into a political lobbying group in the 1970s, and the tactics it used from then on to influence Washington lawmakers by organising its huge grass roots base.(Photo: US-Politics-Guns-NRA, Credit: Karen Bleier/Getty Images)

The air in much of China is so bad the government has repeatedly declared "war" on it. The enemy are tiny particulates which spew forth from countless cars, coal-fired power stations and steel plants to create a dense, putty-coloured smog. Known as PM2.5s, after their length in micrometres, the particulates contain toxic droplets so small they embed deep in the lungs and sometimes even the bloodstream. A former Chinese minister of health has estimated that as many as 500,000 Chinese citizens die prematurely because of them every year. Others have suggested the figure is far higher. Campaigners speak of an ‘airpocalypse’. Public anger is rising, and winning this war has become a top priority for the Communist Party. Beijing recently issued its first pollution 'red alert', closing schools, factories and construction sites. It ordered half of all private cars off the road. But such draconian measures were only temporary. The real question, in a country where millions of people still look to industrialisation to lift them from poverty, is this: what can China do to clear the air? Guests include a man who used to write China's environmental laws and a leading activist with some surprising answers. (Photo: A man and his child wear masks to protest against pollution. Credit: Getty Images)

Gender identity is considered more fluid than ever because of the success of the trans movement. But most trans people, just like everyone else, still identify as either a man or a women. For those who feel they are neither – or both – the male-female distinction does not fit. And, for the one in 2000 who are born with indeterminate sex, finding a place in this binary world can be damaging. So, are there enough genders? We hear from Dr Imran Mushtaq, who works with intersex children at Great Ormond Street Hospital in London; bi-gender vlogger Brin Convenient; Tamara Adrian, Venezuela’s first transgender congresswomen (who wants gender erased from official forms); and the writer Mark Gevisser.(Photo: Transgender transsexual concept. Credit: Thinkstock by Getty Images)

The richest 10% of Americans earn half of all of income. In Britain, the top 10% hold 40% of all the income. Inequality is not just an issue for rich countries. A billion people have been lifted out of poverty since 1990, and inequality has been rising in many other countries too. So, how much inequality is too much? Many may recoil from such a question - inequality is a dirty word. But this programme isn't about fairness. This programme is about economics – and how far inequality affects growth and prosperity. Presented by Linda Yueh.(Photo: A woman walks past a poor man. Credit: Getty Images)

The world has a problem. The climate is changing. At least, most people think so. That’s why global leaders have been meeting in Paris to work out a way to deal with the problem. They blame carbon dioxide in the atmosphere, much of it released by the human need for energy, obtained from fossil fuels like oil and coal. But believe it or not the world also has a solution at hand: sunlight. Harvest it where it shines brightest, in the Sahara Desert for example, and you have the ultimate get-out-of-jail-free card: a techno-fix to the mother of all problems. So, our question this week: why don't we solar panel the Sahara? Our contributors include: Gerhard Knies, a German physicist who has developed the idea; Tony Patt, who leads on this issue for the European Research Council; Daniel Egbe from the African Network for Solar Energy; and Helen Anne Curry, a technology historian, from Cambridge University in the UK. Presented by Michael Blastland(Photo: Sahara Desert. Credit: Getty Images)

The UN forecasts that the number of people living in Africa will double in the next 35 years. Nigeria, the fastest-growing nation, is expected to become the third-largest country in the world by 2050. By the end of the century, almost 40% of the world’s population will live on this one continent. It raises questions about how countries – some of which are already facing big challenges – will cope with twice the number of inhabitants in just one generation. There are fears about the impact a demographic explosion will have on health, society and the environment. But others say Africa’s population boom could turn out to be a good news story. How will a population boom change Africa? Ruth Alexander investigates.(Photo: Onitsha-Asaba Highway. Credit: Pius Utomi Ekpei/Getty Images)

Many claim that ‘Islamic State’ is the ideological offspring of Saudi Arabia; that the strict form of Islam originating in the Kingdom - and the Saudi state's aggressive promotion of it around the world – has fostered terrorism. Saudi Arabia is also accused of funding IS, either directly or by failing to prevent private citizens from sending money to the group. But what is the evidence for these claims? Our expert witnesses include: a former recruiter for Al Qaeda who explains what motivates jihadists; an Islamic law scholar who explains the little-understood beliefs of the so-called Islamic State; and a Saudi government official who says, far from aiding IS, his country is at the cutting edge of countering it.Presenter: Helena Merriman(Photo: Kingdom Tower in Riyadh. Credit to Shutterstock)

Imagine waking up one morning to the sound of a helicopter overhead. You look out and see that packages are being dropped in front of the homes of everyone on your street. You race downstairs, and tear open your package. Inside? Exactly $10,000 in new bills. A gift of freshly-printed money from your government – no strings attached. What would you do? Economists hope you would go out and spend – and that your spending would help kick start the post-industrial economies which many fear are grinding, inexorably, to a complete halt. We explore whether so-called “helicopter money” (more likely, money would simply be wired to your account) really is a solution to the problem of a low- or no-growth future. Our expert witnesses include: Adair Turner, the former head of Britain’s Financial Services Authority, who is prescribing just such economic medicine; Mohamed El-Erian, chairman of President Obama's Global Development Council; Professor Barry Eichengreen of Berkeley University in the United States and Richard Koo, formerly of the Federal Reserve Bank of New York and an economic advisor to successive Japanese governments. Presented by Linda Yueh.(Photo: Helicopter at G7, Credit: Getty Images)

In November the US Drug Enforcement Administration issued its Drug Threat Assessment. Mexican ‘transnational criminal organisations’, it said, are the primary suppliers of heroin, cocaine, methamphetamine, and marijuana to the United States. Drugs – the DEA says – are killing 46,000 Americans a year. But between Mexico’s criminal enterprises, and their clients, is a vast expanse of difficult geography and an international border. So, how do cartels get drugs into the US? The Inquiry hears from serving US law enforcement personnel tasked with intercepting drugs shipments. Their stories – of tunnels, “narco-subs” and complex criminal networks – are astonishing.(Photo: Narco-Submarines, Credit: Reuters)

We first asked this question over a year ago. So far, the answer has been no. The attacks in Paris killed 129 people. The day before that 43 people died when suicide bombers hit Beirut. Nearly two weeks before that a Russian passenger jet exploded over Egypt, killing all 224 people on board. The group calling itself Islamic State has claimed responsibility for all these attacks. If true, in two weeks, they have killed almost 400 civilians, in places way beyond the areas they control in Syria and Iraq. And they would have managed all that while being challenged on the ground by Kurdish fighters and bombed from the air, by coalition war planes, over 8,000 times. Can IS be defeated? We have gone back to the same expert witnesses we met the first time we asked the question. Now, over a year later, we want to know whether their answers have changed.(Photo: Female Kurdish soldier on the frontline against ISIL, Credit: Getty Images)

New research suggests plants might be capable of more than many of us might expect. Some – controversially – even describe plants as “intelligent”, or even “sentient”. So, this week, we’re asking: have we underestimated plants? Our expert witnesses include an academic studying how networks of trees communicate through what she describes as a “wood wide web”, and the pioneer who is using plants to develop robotics.(Photo: US-Fall-Shenandoah, Credit: Getty Images)

Syria’s cultural heritage is being attacked from all sides - the Assad regime, opportunistic looters, opposition forces, Islamic State fighters and even Russian air strikes. Ancient sites like Palmyra have been destroyed, and it is feared that hundreds of precious valuables have been smuggled out of the country to be sold on the international art market. Is it too late to save Syria’s antiquities? We speak to experts including the specialist trying to recover stolen items being sold on the global antiquities market, the volunteer organising a kind of archaeological resistance inside Syria, and the team reconstructing the country’s historic sites using technology. (Photo: Baalshamin detonation, Credit: AP)

Mohammed Akhlaq’s murder shocked India. A mob broke into his house last month and beat him to death. They believed a rumour that Mr Akhlaq, a Muslim, had broken a Hindu taboo by slaughtering a cow. We find out how the cow became such a political animal and look at whether Hindu nationalists are feeling bolder in today’s India. (Photo: An Indian woman sprinkles yoghurt paste onto a cow's forehead. Credit:Getty Images)

Rhinos are in trouble. The ancient Sumatran rhino has just been declared extinct in Malaysia, following the fate of black rhinos in West Africa in 2011. Central Africa's northern white rhino has been reduced to four - yes, four - animals, and conservationists say the more plentiful southern white rhinos are under unprecedented attack from poachers eager to sell the horns to Asian and Arab buyers. This week The Inquiry hears four very different answers to the question: How do you save the rhino? Experts include Namibia’s first female dangerous game professional hunter and one of China’s biggest celebrities and campaigner, Yao Ming.(Image: A baby rhino and an adult rhino. Credit: Getty Images)

Oil accounts for around 75% of Nigeria’s economy, but no-one knows how much the country produces or refines. It means corruption is rife. Hundreds of thousands of barrels of oil are stolen every day, at each level of the supply chain. It is a problem that has cost the Nigerian economy billions of dollars, and weakened its public services and infrastructure. Schools and hospitals are paid for, but never built; citizens are forced to pay bribes for basic services. Many believe Nigeria’s new president, Muhammadu Buhari, is the man to end this decades-old problem. He says he will do it, and has taken personal control of the oil ministry. But it is a huge task he has set himself. So, can Nigeria end oil corruption?(Photo: Buhari inauguration. Credit: AP)

Russia’s intervention in Syria caught the world by surprise. Moscow gave Washington just one hour’s notice before it began its aerial bombardment. Russia claims its jets are attacking the so-called Islamic State. But reports suggest the Russian pilots are in fact targeting groups linked to the Free Syrian Army - the main opposition to Syria’s President Assad, who is a Russian ally. It is the first time President Putin has deployed force beyond the borders of the former USSR and another dramatic step in his increasingly assertive foreign policy. But Josh Earnest, President Obama’s press secretary, has described Russia’s action as motivated by “weakness”. Is he right?Ambassador William Courtney of the Rand Corporation argues that the Middle East is the last place in the world where Russia can play a great power role, and that Syria is the last place in the Middle East where Russia can exert its power. Andrei Kolesnikov explains what he sees as Russia’s weaknesses; a weak economy, declining living standards and a working age population that is deteriorating.Dr Andrei Korolev disagrees. While international isolation and a faltering economy may have forced Russia to adapt, he says, it has done so in ways that make it stronger such as by forming a new alliance with China. The Hudson Institute’s Hannah Thoburn explains how a new politics is emerging. Russians are being asked to accept financial sacrifices in order to help return the country to its place as a global super power, and that so far its working. (Photo: President Putin at the UN General Assembly. Credit: Getty Images)

The CIA has just released 2,500 top secret presidential briefings from the 1960s. The President’s Daily Brief – or PDB – is the US intelligence agencies’ best assessment of global threats, delivered directly to the president every morning. The CIA’s director, John Brennan, has described the PDB as “among the most sensitive and classified documents in all of our government”. The decision to release some PDBs, even documents relating to events many decades ago, was not taken lightly. And, the briefings highlight an almost impossible dilemma – one still faced today by every Director of National Intelligence - what should, and should not, be said? The president cannot absorb everything - there has to be a choice. We explore the relationship between the intelligence, the advisers and the president. What does the president need to know?(Photo: President Lyndon B. Johnson (seated, foreground) working with (background L-R): Marvin Watson, J. Edgar Hoover, Sec. Robert McNamara, Gen. Harold Johnson, Joe Califano, Sec. of the Army Stanley Resor. Credit: LBJ Library)

The United States, UK, Israel and now Pakistan all use drone strikes to kill. In September a general in the Pakistani army announced their first ever use of an armed drone. It was directed at a terrorist compound, he said, and killed three. Meanwhile the US is thought to have launched a secret drone campaign to kill so-called Islamic State fighters in Syria. Armed drones are the counter-terrorism weapon of choice, capable of killing militants from a distance and without putting military personnel in harm’s way. But critics question how far they bolster wider attempts to defeat terrorism. So, do drone strikes work?(Photo: Reaper flies without pilot. Credit: Getty Images)

Japan is a pacifist country - at least that is what its constitution says. The wording, introduced under the occupying forces after World War Two, seems unequivocal: “the Japanese people forever renounce war as a sovereign right of the nation”. But new laws championed by conservative prime minister Shinzo Abe introduce a broader interpretation of what the constitution does, and does not, permit. Abe calls it “proactive pacifism”. Opponents say the laws are “war bills”, betraying the pacifism that has, for many, become central to Japanese national identity. There have been dramatic scenes in parliament with opposition MPs in tears. The majority of the public are opposed and people have taken to the streets in their tens of thousands. So is Japan abandoning pacifism? (Photo: Sumiteru Taniguchi. Credit: AP)

Tens of thousands of people have marched in Buenos Aires and elsewhere in outrage at the astonishing frequency with which women are being killed in Argentina - the vast majority at the hands of their partners or former partners. Violence directed at women and girls is at the extreme end of the scale. But the protesters believe it grows out of the 'machista' culture - where men have to be macho, and women have to do as they are told. In many ways, Argentina is not a special case - we could, perhaps, ask the same question of many nations. But this week The Inquiry is focusing on Argentina because the protests started an urgent debate inside the country about why women are seen as disposable. And, also because the most powerful office in the land is held by a woman - Cristina Fernandez de Kirchner - twice elected president. Why is this power not trickling down? Why is Argentina still so sexist?(Photo: Argentina Femicide Demo. Credit: Getty Images)

The UN forecasts that the number of people living in Africa will double in the next 35 years. Nigeria, the fastest-growing nation, is expected to become the third largest country in the world by 2050. By the end of the century, almost 40% of the world’s population will live on this one continent. It raises questions about how countries – some of which are already facing big challenges – will cope with twice the number of inhabitants in just one generation. There are fears about the impact a demographic explosion will have on health, society and the environment. But others say Africa’s population boom could turn out to be a good news story. Ruth Alexander asks - how will a population boom change Africa?(Photo: Onitsha-Asaba Highway. Credit: Pius Utomi Ekpei/Getty Images)

In 2011, following a devastating tsunami, Japan’s Fukushima nuclear power station went into meltdown, leaking radiation. It was the most serious nuclear accident since Chernobyl. It appeared to send the nuclear power industry into retreat – and not just in Japan. Other nations had second thoughts too. Germany decided to phase out its nuclear reactors altogether. But now Japan has resumed nuclear power generation. At the heart of the 'nuclear wobble' of 2011 is the question of risk. Attitudes to, and understanding of, risk vary surprisingly between nations and cultures. But after one of the most shocking incidents in nuclear power's history, will we be able to cope with our fears? In other words, can we learn to live with nuclear power? (Photo: A Czech Power plant. Credit: AP)

Tens of thousands of migrants continue to queue at the borders of the European Union in search of a better life. Their journeys are often hazardous and thousands have drowned in the Mediterranean trying to reach Italy or Greece. Attempts to share the burden among EU member states have been dogged by internal politics. And Europe’s actions so far have focussed on deterrence despite little evidence that such a strategy will work. So, in this week’s Inquiry, we’re asking what else Europe could try – and whether there are examples from other places, and other times, from which the EU’s leaders could learn. We look at the 1980s resettlement process in response to the Vietnamese “boat people” crisis; we examine Australia’s offshore processing of migrants; and we ask whether focussing on the “front line”, helping those countries migrants are leaving, is a realistic option.Presenter: Ruth Alexander(Photo: Young migrant at Psalidi on Kos, Credit: Press Association Wires)

Robots are coming for your job. Blue-collar jobs in industries like manufacturing have been disappearing for years but now white-collar work is under threat too. Machines are already taking roles that used to be done by journalists, lawyers and even anaesthetists. One recent study calculated that 47% of total employment in the US is at risk of automation in the next 20 years.So what will happen to all the human beings who did those jobs? Will we invent enough new jobs to keep them occupied? If not, how will they fill their time? And how will they earn money? The Inquiry – still made by humans, for now, – brings you answers.(Photo: A robot stands with workers at a Japanese employee supply company. Credit: Getty Images)

In June last year the world's attention became fixed on the progress of so-called Islamic State, or IS. They had just captured Mosul, Iraq's second-largest city. Since then a reported 20,000 fighters from all over the world have joined them. They have killed and enslaved thousands. They have captured towns, oil fields and dams. They control vast swathes of Iraq and Syria. IS are more brutal, sophisticated and enduring than anyone could have predicted. We test the argument that stopping IS will ultimately mean talking to them.(Photo: ISIS Propaganda image)