Putin's Russia has dusted off the old Soviet Union Brezhnev Doctrine which defined specific Soviet borders and decided to send a message to the world that Russia will not sit back and watch the west annex the Russian front. Ukraine has a special place in the Russian consciousness. With much of eastern Europe now in the EU and NATO, it is both Putin’s last line of defense and the core of his planned Eurasian economic union. What makes the Crimea region such a key variable is twofold. First, it is geographically a key sea port into the northern part of the Black Sea and a strategic point of trade for Russia. Secondly, the Crimea population is heavily populated by citizens that are loyal to Russia.