Al-Qaeda chief Zawahri: Islamic State is illegitimate

Al-Qaeda leader Ayman al-Zawahri dismissed the Islamic State movement and its leader Abu Bakr al-Baghdadi as illegitimate but said his followers would join them in fighting the Western-led coalition in Iraq and Syria if possible.

In an audiotape on the internet, Mr. Zawahri said: "We don't recognise this caliphate."