WASHINGTON (AP) — President Joe Biden says the U.S. military mission in Afghanistan will conclude on Aug. 31.

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He says “speed is safety” as the United States seeks to end the nearly 20-year war.

Biden spoke Thursday to update his administration's ongoing efforts to wind down the U.S. war in Afghanistan.

He said: “We did not go to Afghanistan to nation build" and “Afghan leaders have to come together and drive toward a future.”

Biden also amplified the justification of his decision to end U.S. military operations even as the Taliban make rapid advances in significant swaths of the country.

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