U.S. spent at least $ 138 billion on security , logistics and reconstruction since the war . In 2011 , the state department estimated that it would pay $ 3bn over the next five years on its private security contracts to protect its massive embassy complex in Baghdad alone . The controversial former subsidiary of Shell , BP , earned the most . Two oil companies -- Agility Logistics and Kuwait Petroleum Corporation -- also big players .
U.S. spent at least $ 138 billion on security , logistics and reconstruction since the war . The controversial former subsidiary of Shell , BP , earned the most . Two oil companies -- Agility Logistics and Kuwait Petroleum Corporation -- also big players .