So any country that is helping Russia (China, Iran, NK, Belarus, etc) is also a legit target for Ukraine? Or do different rules apply?
Good luck getting an answer to that question. I predict you will get no response at all, or none that is relevant to the question at least.
Yes, of course.
I expect all sides have been, and will continue to, conduct covert operations.
If they are good at it, a future train derailment in Poland or Germany or Norway will look just like an accidental train derailment here in the the USA…
sound familiar?