Support WBURNo U.S. Troops, But An Army Of Contractors In IraqPlay04:28Download AudioTom BowmanDecember 27, 2011 ShareAs many as 5,000 private security contractors will be protecting U.S. diplomats in Iraq. The U.S. Embassy compound (above) and several consulates will have about 15,000 workers, making it the largest diplomatic operation abroad. (Reuters/Landov)