I believe that Russia is not nearly as strong as people believe. If Russia was that strong, they would have defeated Ukraine in short order at the start of the war. But the fact is, they were unable to. The Russian economy combined with Russian corruption precludes it from having a powerful military. In short, Russia is bluffing and they are closer to losing this war than they would like the world to believe.Things are already vastly different. The U.S. and NATO assisted the Ukraine in resisting the Russian invasion. The Russia military on the ground is not as dangerous as Nazi Germany was relative to 1938.
If Ukraine was smart, they wait for the peace talks to start and then launch an all out counter attack against the Russians. The best defense is a strong offense.