U.S. soldiers fire tear gas at Kabul Airport crowds

The scenes at Kabul airport this week have focussed the world's attention on whether outside countries have a duty to accept Afghans who are fleeing because of fear of persecution.

Since the Taliban entered Kabul over the weekend, scenes of chaos have unfolded as thousands seek to leave, fearing a return to the austere interpretation of Islamic law imposed during the previous Taliban rule that ended 20 years ago.

As the airlift of Western citizens and Afghans who worked for foreign governments sought to ramp up, Biden said U.S. forces would remain until the evacuation of Americans was finished, even if that meant staying past the August 31 U.S. deadline for complete withdrawal.

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