A Sunni Muslim cleric at the centre of a diplomatic rift among Gulf Arab states has criticised Washington's role in the campaign against Islamic State militants in Iraq and Syria as purely self-interested.
Ties between Qatar and its neighbours have periodically come under strain following sermons by Sheikh Youssef al-Qaradawi, an Egyptian-born cleric based in Doha, criticising the military-based Egyptian government and conservative Gulf Arab dynasties.