Panorama - Daylight Robbery - What happened to the $23billion?

Jane Corbin investigates the whistleblower cases which threaten to reveal the scandals behind billions of dollars worth of waste and corruption during the past five years of war in the Middle East. When the US and its allies went to war, they gave corporate America contracts for caterers, security guards and interrogators. Now, as the alleged corruption involved in these contracts comes to the surface, Jane Corbin speaks to those involved and asks what happened to the missing $23 billion?