http://www.imdb.com/title/tt0947810/ 

Plot:
During the U.S.-led occupation of Baghdad in 2003, Chief Warrant Officer Roy Miller
 (Damon) and his team of Army inspectors were dispatched to find weapons of mass
 destruction believed to be stockpiled in the Iraqi desert. Rocketing from one
 booby-trapped and treacherous site to the next, the men search for deadly chemical
 agents but stumble instead upon an elaborate cover-up that inverts the purpose of
their mission. Spun by operatives with intersecting agendas, Miller must hunt
through covert and faulty intelligence hidden on foreign soil for answers that
 will either clear a rogue regime or escalate a war in an unstable region. And
at this blistering time and in this combustible place, he will find the most
elusive weapon of all is the truth.