President Biden will say in a speech Wednesday that it's "time to end America’s longest war," as he sets out plans to withdraw all U.S. forces from Afghanistan by Sept. 11, according to prepared remarks.

Driving the news: "I am now the fourth American president to preside over an American troop presence in Afghanistan. Two Republicans. Two Democrats. I will not pass this responsibility to a fifth," Biden will say. "It is time for American troops to come home."

The big picture: Biden's decision to delay the May 1 Afghanistan withdrawal date negotiated by the Trump administration and the Taliban last year reflects a desire to balance two goals that have eluded the past few presidents — bring troops home while ensuring a precipitous withdrawal does not erase the work the U.S. military has done over the last 20 years.

• Biden's planned withdrawal will ultimately not be conditions-based.
• "We cannot continue the cycle of extending or expanding our military presence in Afghanistan hoping to create the ideal conditions for our withdrawal, expecting a different result," he will say.

What they're saying: "While we will not stay involved in Afghanistan militarily, our diplomatic and humanitarian work will continue," Biden will say. "We will keep providing assistance to the Afghan National Defense and Security Forces. Along with our partners, we are training and equipping nearly 300,000 personnel."

The state of play: About 3,000 American troops and 7,000 NATO troops remain in Afghanistan.

• The White House has insisted that the Taliban in Afghanistan cannot be defeated through military force and that the al-Qaeda terrorist network no longer has the resources required to execute an attack on the U.S.
• "Rather than return to war with the Taliban, we have to focus on the challenges that will determine our standing and reach today and into the years to come," Biden will say.

The bottom line: "We went to Afghanistan because of a horrific attack that happened 20 years ago," Biden will conclude. "That cannot explain why we should remain there in 2021."

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