

Much cheaper, but not more secure.
Excluding that, if my country had started a territorial way of aggression, and I was now living in a country that’s been threatened by said country in the recent past as well, I wouldn’t be traveling back, let alone often.
Combined with actual continual examples of Russians not only spying but carrying out assassinations in foreign countries (like the UK) and sabotaging infrastructure almost every month, and if anything, this is pretty light retaliation.
I read 500 years ago, and "thought well I guess then the Roman Salute make a little bit more sense? ".