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Jihadist Aseel Muthana describes life as terrorist

2 July 2014 Last updated at 08:08 BST

Three men from Cardiff who have joined terrorist group Isis to fight in Syria appear to be using social media to discuss brutal executions and life on the front line, the BBC understands.

One of the men, Aseel Muthana, 17, gives a disturbing insight into life as a terrorist and says he's prepared to die for Isis.

Tim Rogers spoke to Mai Davies.