Also you have to remember Ukraine only became a country in 1991. Before that is was USSR. For someone like Putin, Ukraine is still a rouge state to be brought back in the fold. Like Taiwan/China. I feel the world has moved on from USSR boarders but I also understand how someone who lived longer may see things differently. Its not that long ago.
Actually, we should try our hardest to bring Russia into NATO. Won't happen anytime soon for many reasons, but that would be the most rational way forward, I think.
100% correct! Does the Cuban Missile Crisis ring any bells??