Journalist beheading forces British Prime Minister to return from holiday

British Prime Minister David Cameron has arrived back in Downing Street to lead the emergency response to the “shocking and depraved” murder of an American journalist by a jihadist with an English accent.

Cameron will be briefed by senior intelligence officials and Foreign Secretary Philip Hammond as investigations are carried out following the release of horrific video footage that appears to show James Foley being beheaded by an Islamic State (IS) extremist.