The mother of El Shafee Elsheikh, 27, from London, has spoken out about her son's transformation.
Nihad Barakat was just 16 when she was kidnapped by ISIS fighters.
London-born Aine Davis is being held in Turkey after he was detained in November.
The three men were friends in West London, attending the same mosque before traveling to Syria.
Endless debates about whose face lies behind the executioner's mask are futile, writes Quilliam's Haras Rafiq.
"He doesn't know anything. He's a small boy."
In the video the man shoots five people accused of spying for the U.K.
Killer is reported to be 28-year-old Anatoly Zemlyanka, quickly dubbed "Jihadi Tolik"
This is a moment for robust and bold leadership on both sides of the Atlantic.
France tightened its border controls in response to deadly attacks at a concert venue, stadium and restaurant.
The Pentagon said that the airstrike was carried out in Raqqa.
The United States is still assessing the effectiveness of the strike.
Waheed Ahmed was detained Turkey before being arrested at Birmingham Airport.
Comedian Humza Arshad is touring schools after being recruited by UK counter terrorism police.
Airlines to refuse passengers suspected of 'terrorism-related activity' after 600 Britons join militants in Iraq and Syria.
CAGE campaigners release conversation in which Mohammed Emwazi details interrogation by MI5.
Court papers show Mohammed Emwazi has been known to security services since 2011.
British media had previously only published a picture of Kuwaiti-born Emwazi as a smiling schoolboy.
Asim Qureshi of Islamic advocacy group CAGE was revealed to have been in contact with 'Jihadi John' before he left the UK.
The masked British militant who appeared in beheading videos of Western hostages has been named by the Washington Post.
A total $200 million ransom has been demanded for the lives of the two men.
A father living in Cardiff has identified his son, a British medical student, among a group of Islamic State jihadists beheading Syrian soldiers in the desert
The masked Islamic State militant in the videos depicting the beheading of two Americans has been identified, FBI Director James Comey said on Thursday