An interesting example of Iran going after vessels that are not in their waters, just close. This is the one of 2 seizures of boats of the UK- three boats seized; this one they jerked around the crews quite a bit before release, with mock executions, in a temper tantrum over a British vote:
https://en.wikipedia.org/wiki/2004_Iranian_seizure_of_Royal_Navy_personnel
Well, we all know that the Iranian government is VERY unpleasant and detestable.
(I am trying, desperately, to not refer to the Iranian government as assholes, but, well, sometimes you gotta call ‘em like you see ‘em!)