Al Qaeda leader Ayman al-Zawahiri killed in a CIA drone strike in Afghanistan.

• Al-Zawahiri was Osama bin Laden's number two

• Biden, who remains in isolation after a rebound case of covid, will make the address from the first floor balcony off the blue room of the White House

• 'Over the weekend, the United States conducted a counterterrorism operation against a significant Al Qaeda target in Afghanistan,' a senior official said

• 'The ope…