Its good the world is starting to rally again....The Russian young know the real deal...Guess that's why Putin shut down FB and Twitter..
However, Putin could care less,,,,,He will only understand one thing. NATO is the one that holds that power....If not a coalition, then the US should consider it alone...Just for the reason you stated..
If the world pushes him back, he will be happy to have sanctions lifted and go back to the status quo, with a lesson learned about modern expansionism...