It's just delusion if people believe either neo con’s cold war II or liberal’s trade war toward Russia can work. I am also amazed by lacking of understanding Ukraine and Russia by western people in general. In particular they don't understand why Putin is so popular in Russia. But I wont have energy to argue about that.
The bottom line is: Russia acted rationally to protect its people & interests from attempt to change the geopolitical balance in its backyard. Russia's action is defensive but strongly. Hours after Obama’s “cost…” warning, its military entered Crimea(without blood); right after Ukraine asked u.s. for weapon support, its troops mass at Ukraine border...
On the other hand, EU/U.S are very irrational. They know how dangerous the game is, but they still want to play, They know the main force of this so called revolution,illegally overthrow elected president (yes, very corrupted but still a legal president) is radicals and Nazi supporters, they still support them anyway.