...Russia provided troops and equipment for the peacekeeping force in the Balkans. Also, that operation was planned and executed by NATO ( their first, I believe). Whatever the case, I believe the Kosovo/Serb cold conflict will be the next excuse for Russian expansionism. Either there, or as well as there, in Dagestan/Ossetia/Georgia regions.
Even the civil war in Ukraine, which is absolutely criminal has international precedent (vis a vis Syria).