The Afghanistan War began in October 2001 following the September 11 attacks, when the United States launched military operations against the Taliban regime for harboring al-Qaeda. The initial phase quickly removed the Taliban from power, but the conflict evolved into a prolonged insurgency.
Over the next two decades, international forces supported the Afghan government while Taliban forces regrouped and expanded their influence. Major developments included NATO involvement, counterinsurgency operations, peace talks, and periodic escalations in violence.
In 2020, the Doha Agreement set the stage for the withdrawal of foreign troops. By August 2021, the Taliban regained control of Kabul, effectively ending the war. The conflict resulted in significant human casualties, economic costs, and long-term political instability in the region.