Explained: What happens now that US troops have left Afghanistan?

The end of the US military involvement in the troubled country raises a new set of questions for US President Joe Biden and his administration

For the first time since 2001 there are no American troops in Afghanistan after the United States completed the evacuation of most of its citizens and thousands of at-risk Afghans.

More than 114,000 people have been airlifted from Kabul airport in the past two weeks as part of the U.S. effort.

But the end of the U.S. military involvement in Afghanistan raises a new set of questions for Biden and his administration.

What happens to Americans and at-risk Afghans left behind?
 

The United States has evacuated more than 5,500 U.S. citizens since evacuation flights began on Aug. 14. A small number