al-Baghdadi has been in charge of the brutal militant group since 2010

A video allegedly showing the Isis’s secretive leader Abu Bakr al-Baghdadi delivering a sermon at a mosque in Iraq has been posed online.

Al-Baghdadi has never before made such a public appearance, and there are only two known photographs of him. His decision to do so, in Mosul, the city the Sunni Islamist insurgents have held for three-weeks, and to do so by leading the first Friday prayer service of Ramadan, is seen as a brazen display of power.

Speaking from the grand mosque’s balcony, wearing the traditional dress of a Sunni Muslim scholar, he calls for global jihad and urges the world’s Muslims to flock to the Islamic caliphate Isis has declared across the territories it controls in Iraq and Syria. Al-Baghdadi was proclaimed