You don't negotiate with someone who is trying to kill (or subjugate) you.You're right. Our politicians in Europe fell back into some kind of appeasement policy vs Putin. Did not work just like it failed pre-WW2 with Hitler.
This kind of policy never works vs dictators, they'll always outplay you and results in a way bigger boom than if you had stood up to them earlier.
The hardest part is the recognition of that.
Look at Israel, I think they recognize and understand that all to well.