US President Joe Biden in a live address said: "Justice has been delivered" in US strike killing al-Qaida leader al-Zawahri; "this terrorist leader is no more." He confirmed reports that began hours earlier about the attack. Al Qaeda leader Ayman al-Zawahiri was killed in a US drone strike in Afghanistan over the weekend, Biden confirmed and US officials said earlier, the biggest blow to the militant group since its founder Osama bin Laden was killed in 2011.