(AP) — After two decades, the United States has completed its withdrawal from Afghanistan, ending America’s longest war and closing a sad chapter in military history. It’s likely to be remembered for colossal failures, unfulfilled promises and a frantic final exit that cost the lives of 13 U.S. service members and more than 180 Afghans. The last U.S. Air Force evacuation flight left Kabul airport late Monday. Secretary of State Antony Blinken put the number of Americans still remaining in Afghanistan at under 200. Jake Sullivan, Biden’s national security adviser, says the mission to get the last Americans out “has shifted from a military mission to a diplomatic mission.” Biden was set to address the nation on Afghanistan later Tuesday.