DOHA, Qatar (AP) — Acknowledging a military stalemate after nearly two decades of conflict, the United States on Saturday signed a peace agreement with the Taliban that is aimed at ending America's longest war and bringing U.S. troops home from Afghanistan more than 18 years after they invaded in the wake of the Sept. 11, 2001, terrorist attacks.

The historic deal, signed by chief negotiators from the two sides and witnessed by Secretary of State Mike Pompeo, could see the withdrawal of all American and allied forces in the next 14 months and allow President Donald Trump to keep a key campaign...