U.S. military chapter in Iraq draws to a close

BAGHDAD (Reuters) - Nearly nine years after the U.S.-led invasion of Iraq ousted Saddam Hussein, American troops are pulling out and leaving behind a country still battling insurgents, political uncertainty and sectarian divisions. Nearly 4,500 U.S. soldiers and tens of thousands of Iraqis lost their lives in a war that began with a "Shock and Awe" campaign of missiles and bombs pounding Baghdad