Reuters
By Idrees Ali WASHINGTON (Reuters) – By Wednesday night, U.S. intelligence agencies were near certain that an attack was imminent outside Kabul airport, triggering a State Department warning to American citizens to leave the area immediately. Just over 12 hours later, a suicide bomber walked through the large crowds to a gate manned by U.S. troops and detonated explosives, killing at least 13 U.S. service members and 79 Afghans. It was a tragic coda to America’s 20-year war in Afghanistan, the largest loss of life for the U.S. military there in a decade, on the cusp of the full withdrawal of t…