Armed members of the Taliban kept people desperate to flee Afghanistan from reaching Kabul's airport on Wednesday, witnesses said, while President Joe Biden vowed to keep US troops in the country until all Americans are evacuated.

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.

"Everyone wants out," said a member of an Afghan family after it arrived in Germany. "Every day is worse than the day before. We saved ourselves but we couldn't rescue our...