Re: when a person can't leave their country
In the UK, people only have their right to travel taken away on criminal grounds, not political. For example, some football hooligans have their passports taken away and they have to report to a police station on the day of an England match in a foreign country, to prove that they are here, not there. As far as I know, it's just referred to as a travel ban. The person is "banned/barred from travelling abroad".
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