In the aftermath of the attacks of September 11, 2001, the United Nations Security Council moved swiftly and laid the keystone of an international framework of counterterrorism efforts. Twenty years later, it’s past time to rethink all of them. Back then, the Security Council obliged states to deny terrorists safe …

The terrorist group that calls itself the Islamic State Khorasan Province, or ISIS-K, provided one of the last searing images of the United States’ 20-year counterterrorism mission in Afghanistan when two of its suicide bombers killed thirteen U.S. troops at Kabul’s international airport, the deadliest day for U.S. armed forces …

The Biden administration is trying to work around longstanding terrorism-related sanctions to facilitate the delivery of aid to the struggling Afghan population. Despite the issuance of sanctions exceptions, Taliban rule in Afghanistan will cause many global banks to refuse to finance commercial transactions with the Afghan private sector. Whether U.S. …