The US has killed the leader of al-Qaeda, Ayman al-Zawahiri, in a drone strike in Afghanistan, President Joe Biden has confirmed.
He was killed in a counter-terrorism operation carried out by the CIA in the Afghan capital of Kabul on Sunday.
Mr Biden said Zawahiri had “carved a trail of murder and violence against American citizens”.
“Now justice has been delivered and this terrorist leader is no more,” he added.
Officials said Zawahiri was on the balcony of a safe house when the drone fired two missiles at him.
Other family members were present, but they were unharmed and only Zawahiri was killed, they added.
Mr Biden said he had given the final approval for the “precision strike” on the 71-year-old al-Qaeda leader after months of planning.
Zawahiri took over al-Qaeda after the death of Osama bin Laden in 2011. He and Bin Laden plotted the 9/11 attacks together and he was one of the US’s “most wanted terrorists”.
His killing will bring closure to families of the victims of the 2001 attacks, Mr Biden said.
“No matter how long it takes, no matter where you hide, if you are a threat to our people, the United States will find you and take you out,” said Mr Biden, adding that “we shall never waver from defending our nation and its people”.
Mr Biden said Zawahiri had also masterminded other acts of violence, including the suicide bombing of the USS Cole naval destroyer in Aden in October 2000 which killed 17 US sailors.
Biden on Zawahiri killing: ‘Justice has been delivered’
A Taliban spokesman described the US operation as a clear violation of international principles.
“Such actions are a repetition of the failed experiences of the past 20 years and are against the interests of the United States of America, Afghanistan and the region,” the spokesman added.
However, US officials maintained that the operation had a legal basis.