In photos: Scenes from Afghanistan as America's longest war ends
The Pentagon tweeted a photo of the last American soldier to leave Afghanistan, with the caption "ending the U.S. mission in Kabul."
The big picture: The moment marks the end of America's longest war after nearly 20 years of military involvement in Afghanistan. Taliban fighters were pictured with American equipment moving into Kabul's international airport soon after the U.S. troops left.
Editor's note: This article has been updated with more photos.