> They already do stuff like this.

Who?

I can't think of a single case other than Ryanair 4978, a plane that was carrying a Belarusian opposition activist over Belarusian airspace. Not saying this was justified in any way, but even Belarus didn't dare to touch any foreign passengers.

If you're aware of any actual case of a first-world airliner from country A being forced to land in country B to have a citizen of country C arrested, please provide links.