This morning, at least 13 U.S. troops were killed in Kabul, Afghanistan by two suicide bombers and gunmen. Twelve deaths were initially announced, followed by confirmation of an extra death hours later. More than a dozen soldiers were wounded by the attack. ISIS claimed responsibility for the attack, bragging about a suicide bomber “managing to penetrate all the security fortifications” put into place by U.S. forces and the Taliban. This attack is the deadliest for U.S. troops in Afghanistan in over a decade. A previous attack took place on Aug. 5, 2011, killing 30 U.S. soldiers and 8 others on board a Boeing Chinook Helicopter, which had been shot down by an insurgent armed with a rocket-propelled grenade. Public officials were quick to respond to the latest attack. State Secretary Antony Blinken in a statement called the U.S. troops who died “heroes,” adding, “They put their lives on the line to …