Could Britain have prevented 'new Jihadi John' from leaving?

Opposition members in Britain’s parliament on Tuesday criticized the government for failing to prevent the man who could be the “new Jihadi John” from traveling to Syria to join Islamic State (ISIS) extremists despite the fact that he was charged with serious crimes.

The accusations, reported by The Associated Press (AP), came after British news media reports that the man who appeared in an ISIS video posted Sunday in which five purported spies were shot dead might be Siddhartha Dhar, also known by his Muslim name Abu Rumaysah.