AMSTERDAM—The prosecutor of the International Criminal Court on Monday said he was seeking approval to resume a war crimes investigation into Afghanistan, focusing on the actions of the Taliban and the “Islamic State Khorasan” (ISIS-K). A statement said the request was being made to the court’s judges in light of developments since the Taliban terrorists seized control of Afghanistan in a lightning advance last month. The ICC had already spent 15 years looking into alleged war crimes in Afghanistan before opening a full investigation last year. That probe was put on hold by the Afghan government, which said it was investigating the crimes itself. The Hague-based ICC is a court of last resort, intervening only when a member country is unable or unwilling to prosecute war crimes, crimes against humanity, or genocide. The fall of the internationally recognized Afghan government and its replacement by the Taliban represent a “significant change …