The relevant precedent, which NATO enthusiastically created for this, was Kosovo, where the “duty to protect” ethnic Albanians, some of whom had been Yugoslav citizens, some of whom were illegal immigrants, was propped up with breathless, false accounts of genocide. The nadir of false pretenses to justify military action has to have been the account of Pristina stadium being used as a concentration camp given in all seriousness at a NATO press briefing and promptly debunked by Agence France-Presse reporters walking around on the empty soccer field of said stadium later the same day.
It not only created a precedent that Russia can apply to justify all manner of military action in the “near abroad”, but was a deliberate provocation of Russia — stealing land from Slavic Orthodox Christians to give to Muslims. Not only the precedent, but the provocation are still remembered in Moscow.
Indeed, and Samartha Powers' R2P speil is coming home to roost; not that the US Left will admit any commonality, at all.