Al-Qaeda chief warns of 'thousands' of 9/11 attacks
Al-Qaeda chief Ayman al-Zawahiri has threatened the US that the 9/11 attack on the World Trade Centre will be "repeated thousands of times”, in a video marking the 15th anniversary of the attack. Al-Zawahiri added that the events of 9/11 were a direct result of US "occupation of Muslim lands"  and "theft" of their resources.