Two British-born alleged Daesh* terrorists, dubbed 'Beatles' will be sent to the US to stand trial for murder and other crimes against American hostages in Syria.
The pair are accused of kidnapping, torture, sexual assault and gruesome murder by beheading hostages, including journalists James Foley and Steven Sotloff, and aid workers Kayla Mueller and Peter Kassig.
A trial in Virginia was to get a green light after the UK High Court lifted a block imposed in March by the US Supreme Court on sharing evidence stemming from a legal challenge by the mother of one of the suspects.
The UK High Court ruling followed Barr's assurance that the two would not face the death penalty, a punishment for murder that was abolished in mainland Britain in 1965, which Barr's predecessor, Jeff Sessions, refused.
The two also admitted to beating Foley, an AFP agency reporter, before he was beheaded on camera by Mohammed Emwazi, known as "Jihadi John", in August 2014. A notorious video of the gruesome murder was posted to social media.
US military officials claim that Emwazi, who also murdered Sotloff, was killed in a 2015 attack by two US CIA-operated and one British drone aircraft in Raqqa, northern Syria.
The fourth 'Beatle' is Aine Lesley Davis, a former drug dealer from London who converted to Islam. He was sentenced to seven and a half years in prison by a Turkish court in 2017 for membership in a terrorist group after he was arrested in Istanbul in November 2015.
The four gained their 'Beatles' moniker for their "multicultural London accent" - vernacular far removed from the original Fab Four's Liverpudlian twang.
*Daesh (also known as ISIS/IS/ISIL/Islamic State) and the Muslim Brotherhood are terrorist organisations banned in Russia.