Look Art. The guys parents left Libya because of Gaddafi. His parents wanted rid of Gaddafi. NATO got rid of Gaddafi. 

So your hypothesis is that while the parents wanted rid of Gaddafi, they didn't really want rid of him. They returned to Libya on their own after Gaddafi was gone but didn't really want to return. Their son went to Libya and got training from an ISIS affiliate because he was upset NATO got rid of Gaddafi, even though he was happy Gaddafi was gone. How many more bends in your pretzel logic do you have to blame Britain?