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Stephen Nolan exclusively interviews a former US soldier who is fighting Islamic State in Iraq.

Brett Royales - who also calls himself the 'Soldier of Christ' - fights for a Christian militia called Dwekh Nawsha.

He admitted that he has seen "a lot of bad stuff" and that the IS militants are "worse than animals" for what they have done to women in the country.

Royales said that there is a bounty on his head and has been given advice from friends and contacts on how to stay safe.

"I'm pretty skilled at what I do. If they can capture me alive, then they have earned it," he added.

This clip is originally from Stephen Nolan on Friday 6 March 2015