Biden will withdraw all U.S. forces from Afghanistan by Sept. 11

President Joe Biden will withdraw all American troops from Afghanistan over the coming months, people familiar with the plans said, completing the military exit by or before the 20th anniversary of the Sept. 11, 2001, attacks that first drew the United States into its longest war.

The decision, which Biden is expected to announce on Wednesday, will keep thousands of

U.S. forces in the country beyond the May 1 exit deadline that the Trump administration negotiated last year with the Taliban, according to a senior administration official who briefed reporters Tuesday under rules of anonymity set by the White House.

While the Taliban has vowed to renew attacks on U.S. and NATO personnel if foreign troops are not out by the deadline, they made no initial statement in response to the announcement, and it is not clear if the militants will follow through with the earlier threats given Biden’s plan for a phased withdrawal between now and September.

Officially, there are 2,500 U.S. troops in Afghanistan, although the number fluctuates and is currently about 1,000 more than that. There are also up to an additional 7,000 foreign forces in the coalition there, the majority of them NATO troops.

Biden’s decision comes after an administration review of U.S. options in Afghanistan, where U.S.midwived peace talks have failed to advance as hoped and the Taliban remains a potent force despite two decades of effort by the United States to defeat the militants and establish stable, democratic governance. The war has cost trillions of dollars in addition to the lives of more than 2,000 U.S. service members and at least 100,000 Afghan civilians.

“This is the immediate, practical reality that our policy review discovered,” said one person familiar with the closed-door deliberations who like others spoke on the condition of anonymity to discuss policy planning. “If we break the May 1st deadline negotiated by the previous administration with no clear plan to exit, we will be back at war with the Taliban, and that was not something President Biden believed was in the national interest.”

The goal is to move to “zero” troops by September, the senior administration official said. “This is not conditions-based. The president has judged that a conditions-based approach … is a recipe for staying in Afghanistan forever. He has reached the conclusion that the United States will complete its drawdown, and will remove its forces from Afghanistan before September 11.”

The decision highlights the trade-offs the Biden administration is willing to make to shift the U.S. global focus away from the counterinsurgency campaigns that dominated the post-9/11 world to current priorities, including increasing military competition with China.