Presidents' reactions have consistently combined outrage with promises of revenge. The language is remarkably similar. But there has been far less consistency in the delivery of actual retaliation.
The final evacuation flight brought to a close the longest war in U.S. history. The withdrawal leaves the future of Afghanistan in disarray and uncertainty under renewed Taliban rule.
A military air traffic controller describes a "steady flow" of aircraft in and out of Afghanistan two days after a deadly explosion and three days before the U.S. deadline to leave.
ISIS-K had claimed responsibility for the attack at the Kabul airport. President Biden vowed, "We will not forgive. We will not forget. We will hunt you down and make you pay."
For India, the power shift in Kabul may mean a loss of security, as well as a loss of economic power and influence in a region increasingly dominated by another neighbor that it's uneasy about: China.
A regional Islamic State affiliate is a major rival to the Taliban in Afghanistan. The U.S. says ISIS-K has long planned attacks on its personnel in the country.
An Islamic State affiliate says it was behind the attacks that killed at least 13 U.S. service members and dozens of Afghans. Here's what we know right now.
Now that the Taliban are back in power, aid agencies in Afghanistan are bracing for an uncertain future — and hope to maintain the progress they've made over the past two decades.