How concerned should we be about the recent Iranian threats?

Iran’s Supreme Leader, Ayatollah Ali Khamenei, issued a direct warning to the United States, stating that weapons capable of sending U.S. aircraft carriers "to the bottom of the sea" are "more dangerous than the vessels themselves. " How concerned should we be about the threat, rising tensions, and Iran’s nuclear program? Daniel Flesch, Executive Director of the Defense Technology Alliance, joins Newell to talk about it.