In the sky news article it says this:
Letts was arrested as he tried to flee IS territory into Turkey. He claims he deserted the terror group because he decided they were not Islamic.
"I accidentally joined a mafia in Iraq and Syria, maybe not a mafia, but a very bad group of people, thinking they are Muslims.
“If I had learned Islam properly, If I had understood I would have learned that these were a very bad group of people. I wouldn’t have been in the situation that I’m in,” he said.
So the question is whether or not his story is true. It is true that most Muslims don’t support ISIS, it’s a fanatical group whose ideology is based on non-mainstream interpretations of their religion. But how can he prove his story? And anybody who has any idea of what is going on in the world is aware that ISIS was killing anybody they came across that isn’t a Sunni Muslim, as well as those who refused to join or otherwise comply with their demands, plus raping women and keeping sex slaves. So even if they were doing other things that weren’t consistent with his idea of what Muslims should be doing, he must have been aware that he was joining a group whose goal was to kill, rape, and conquer territory.
With regards to stripping him of his citizenship, I don’t really sympathize with this guy too much but this does set a dangerous precedent. Where do they draw the line for who can be stripped of citizenship and who can’t? If the UK or Canada is under no obligation to help him then they don’t need to, and if there is something he can be charged with (like joining a terrorist group) then if he makes it back to wither country he should be charged. If stripping people of citizenship becomes a normal thing then it could happen to anyone who leaves the country and is accused of a crime, and their home country decides that they are undesirable for whatever reason.