美军于周三从其在伊拉克剩余的基地撤出，引发担忧：他们可能留下安全真空，进一步助长伊朗支持的民兵势力，并给死灰复燃的伊斯兰国组织提供重新集结的机会。
US forces withdraw from their remaining bases in Iraq on Wednesday, raising fears they will leave behind a security vacuum, further embolden Iranian-backed militias and give the resurgent Islamic State group an opening to regroup.