Eloethan The Ukraine has already said that it will agree to not become part of NATO.
Russia is an aggressor determined to rebuild the old Russian empire. It will not stop at Ukraine. If it gets UKraine, or even some of Ukraine, it will move on. It is already supporting, training and supplying dissident groups in Moldavia and Georgia, and has turned Belorus into effectively a client state. Poland knows that it is on the lsit, which is why it is offering Ukraine so much support.
There are a lot of parallels between the Putin regime and Hitler regim. Hitler invaded and occupied, Normay, Denmark, The Netherlands, Belgium, parts then all of France under the Vichy regime (Belorus equivalent), Poland, Austria etc etc. yes it had a terrible and vile regime behind it, which is a lot worse than anything Putin can think of, but do not let that hide the fact that Hitler's first and main aim was to invade and occupy a huge area of Europe to form a German Empire. That is exactly what Putin is doing.
We tried appeasement in the late 1930s. Look where that got us.