I agree. The problem is that Putin is not interested in diplomacy. Putin has made it very clear that he only respects force. So the only way to convince him not to invade a country he wants to invade, is a hard guarantee that NATO will defend that country. That's the only way. And NATO didn't give that promise to Ukraine, which is why Putin felt he could invade it.

NATO is now trying to prevent escalation while still trying to help Ukraine and prevent it from being conquered. The problem is that now there's a violent and bloody stalemate. It needs to stop, but the only way to stop is for Putin to pull his forces out of Ukraine, and he's not going to do that without some very strong arguments.