Based on Washington Post political columnist David Ignatius’ novel of the same name, “Body of Lies” makes the harshest appraisal of American foreign policy of any big-budget studio film produced during the second Bush administration. The movie posits that our country has lost its direction in the Middle East, portraying frontline operatives as working without strategy or the necessary willingness to cooperate with foreign governments to achieve peace. “We’re waging war in a place we don’t entirely understand,” said DiCaprio, who consulted with a former head of the CIA in preparation for the role.