Primary responsibility to defend Europe should lie with Europe. The ability to defend oneself is just as important as climate. One has wide public support, the other is taken for granted (thanks to Nato).
https://www.nato.int/cps/en/natohq/topics_67655.htm#:~:text=....
Several countries hadn't made real any moves towards reaching that goal, and even now are still falling far short (see page 3):
https://www.nato.int/nato_static_fl2014/assets/pdf/2020/10/p...
Welcome to World War 3. watch the FOSSIL fuel prices, ouch!
The war is over Ukrainian NATO membership. If NATO membership was off the table, or if Biden was strong and had the conviction to defend Ukraine there would be no war.
Instead he entertained Ukrainian NATO membership and tried to fend Putin off with finger wagging.
That is to say they have every reason to believe that they could without invasion keep Ukraine out of NATO for the foreseeable future so the invasion isn't about that issue.
No, of course not. What NATO should have done was to accept Ukraine as a member. Anybody think Putin would invade a country that can refer to §5?