WASHINGTON (AP) – Senior Pentagon officials say the collapse of the Afghan government and its security forces in August could be traced to a 2020 U.S. agreement with the Taliban that promised a complete U.S. troop withdrawal. Gen. Frank McKenzie, the head of Central Command, told the House Armed Services Committee that once the U.S. troop presence was pushed below 2,500 as part of President Joe Biden’s decision in April to complete a total withdrawal by September, the unraveling of the U.S.-backed Afghan government accelerated. Defense Secretary Lloyd Austin said he agreed with McKenzie’s analysis.