U.S. President Joe Biden said that the mission of Afghanistan "was never supposed to be nation-building."
Addressing the nation on the ongoing Afghanistan crisis, Biden said, " I am the president of the United States of America. The buck stops with me.”
He noted that America's role in Afghanistan had always been "counter-terrorism," not "nation-building."
"Our only vital national interest in Afghanistan remains today what it has always been, preventing a terrorist attack on the American homeland," Biden continued.
On Aug. 15, the Taliban took back Afghanistan's capital Kabul after its president, Ashraf Ghani, fled the country.
The U.S. deployed around 5,000 U.S. troops to evacuate the U.S. Embassy staff throughout the weekend.
Biden, in his speech, noted that he had authorized 6,000 U.S. troops to assist in getting U.S. personnel and allies removed from the country.
In 2001, US-led forces attacked Afghanistan to remove the Taliban from power following the 9/11 attacks.
The U.S. accused the Taliban of protecting Osama bin Laden.
Per Brown University, the U.S. has spent over $2.26 trillion in war since invading Afghanistan.
Over 2,300 U.S. soldiers lost their lives and more than 20,000 were injured in the war.