That’s the failure in logic, right there: if what we did is wrong, then what they are doing is wrong also. If what Russia is doing is “ok,” then what we did is “ok” also.
What NATO did to Yugoslavia was in violation of the Westphalian order.
What is the order that replaced it? Russia is saying NATO ended the Westphalian order and now Russia has to assume it lives in the Darwinian jungle of survival of the fittest.
In 1998, at a Symposium on the Continuing Political Relevance of the Peace of Westphalia, the then NATO Secretary-General Javier Solana said that "humanity and democracy [were] two principles essentially irrelevant to the original Westphalian order" and levied a criticism that "the Westphalian system had its limits. For one, the principle of sovereignty it relied on also produced the basis for rivalry, not community of states; exclusion, not integration."
http://www.nato.int/docu/speech/1998/s981112a.htm