This is not the 20th Century...it's the 21st and even the Military Officers have stated that's a serious problem because people are believing you can operate on the World Stage as you did in the 20th Century.... the World and nations of does not operate as it did then........trade agreements, pipelines and such all interconnect nations to nations.....so Europe and Nato were completely unprepared to stop or influence what we saw with Crimea and may likely see further of....and they still do not know how to handle this situation.....there's no money anywhere for another war....and Putin knew that as well.
....and the response to Putins actions showed Europe and all others that they've been operating with a ‘false sense of security'believing that dialogue and diplomacy is all it takes....Putin just showed them otherwise...to every ones embarrassment.
read The Perestroika Deception
And by the way...you apparently do not understand anything about communism