Gayle Tzemach Lemmon is a senior fellow at the Council on Foreign Relations. She is the author of “Ashley’s War: The Untold Story of a Team of Women Soldiers on the Special Ops Battlefield.” The opinions expressed in this commentary are hers.
(CNN)America is trying to learn the lessons of its post-9/11 wars. And in his speech to the nation Monday evening, Donald Trump, the third US President to grapple with the 2001 invasion of Afghanistan, promised not nation-building, but terror-pursuing.