The Nagorno-Karabakh conflict

Last month Armenia and Azerbaijan agreed a peace deal after six weeks of fierce fighting over the disputed Nagorno-Karabakh region. Tens of thousands have died and up to a million people have been displaced, since a bloody war between the two countries ended in a ceasefire in 1994. Central and eastern Europe correspondent, Daniel McLaughlin, explains the background to the conflict over Nagorno-Karabakh and its regional and global implications.