Yahya Farooq Mohammad also admitted to helping send funds to a US-born al-Qaeda leader.Read more
The footage is among files from the al-Qaeda leader's computer released by the CIA.
Russia says an air strike has critically injured the leader of an al-Qaeda-linked jihadist alliance.
Dr David Roberts
King's College, London
Syrian jihadists Jabhat al-Nusra's decision to detach itself from al-Qaeda could end up strengthening the group, says David Roberts of King's College, London.Read more