A U.S. Chinook helicopter flying over the U.S. Embassy in Kabul, Afghanistan, on Sunday. Helicopters are landing at the U.S. Embassy

KABUL: A U.S. Chinook helicopter flying over the U.S. Embassy in Kabul, Afghanistan, on Sunday. Helicopters are landing at the U.S. Embassy in Kabul as diplomatic vehicles leave the compound amid the Taliban advanced on the Afghan capital. In window picture US Diplomats being evacuated from roof of US Embassy in Saigon on 29 April 1975.–Agencies.