> it is acceptable

It's acceptable, as I said, targets in RU soil legitimate. Of course the UKR has their own calculation on what PRC interests in RU they're able to hit that's not counterproductive - PRC support for RU MIC can be much more than what it is.

Even if we accept moving from "rule based" doesn't discount realist/rational based which rule based is derived from. It is not hard to understand allowing your house to be used to shoot at someone else = your house is now legitimate target. Expecting immunity under those conditions is strategic fantasy, especially when IR hitting GCC countries is arguably not counter-productive.