Abu Bakr al-Baghdadi, who has not been seen on camera since 2014, vows revenge for his militants.Read more
The so-called Islamic State's caliphate in Syria and Iraq has been been declared over but this hasn't ended fears about the threat they might still pose in the region. US officials believe the extremist group may have between 15,000 to 20,000 armed fighters in sleeper cells. IS were chased out of the Iraqi city of Mosul in December 2017. Newsday's Shaimaa Khalil travelled there last year and has gone back to find a population increasingly frustrated at the slow rebuilding process. (Photo: Picture of al-Nuri mosque in Mosul, destroyed in the fight against the so-called Islamic State Credit: Huong Ly/BBC)
RAF crews have been talking to the BBC's Jonathan Beale about the challenges they face in avoiding civilian casualties in Iraq and Syria.
For the first time since the Islamic State group overran the city in 2014, its museum reopens.