John R. Allen

John Rutherford Allen is a retired United States Marine Corps four-star general, and former commander of the NATO International Security Assistance Force and U.S. Forces – Afghanistan (USFOR-A). On 13 September 2014, president Barack Obama appointed Allen as special presidential envoy for the Global Coalition to Counter ISIL. He was succeeded in that role by Brett McGurk on 23 October 2015. He is the co-author of Turning Point: Policymaking in the Era of Artificial Intelligence with Darrell M. West and Future War and the Defence of Europe alongside Lieutenant General (Ret.) Ben Hodges and Professor Julian Lindley French. Allen was president of the Brookings Institution from October 2017 until his resignation on 12 June 2022.