obviously you can’t move to a hostile power during wartime that’s called defecting.
I'm not trolling. This is what people claim when they say people can't leave the country. Debunking this claim without acknowledging that the core idea is true is dishonest.
No country on Earth currently or has ever allowed that.
I am pretty sure that people traveled between the US and the USSR in both directions during the cold war. Indians and Pakistanis can travel back and forth. Heck, Americans can go to Iran right now if they can figure out a way to.