Putin is trying to safe face and keep the cash coming in.
The russians have a history of not liking when people tell them to pound sand.
Historically, they would have invaded and annexed.
Now, the economic climate has changed, the russian bear is old and lost much of its fur. The threat of the commies doesn’t scare people like it once did.
They’ve lost too many times in recent history. They lost germany, they lost Afghanistan, they lost to Reagan, their only victories to speak of, south Africa and zimbabwe. And even those have become chinese victories.
Putin can wait all he wants, but russia can be taken down just as easily as SA and Rhodesia, easier because unlike these Russia is dependent nowadays on export. Be it gas, oil, guns and ammo, Russia can’t afford sanctions, at all.