Ukraines' civil unrest put Russia's not-insignificant Crimean and eastern-Ukraine military assets at risk. Crimeans voted to join the Russian Federation - or i

Ukraines' civil unrest put Russia's not-insignificant Crimean and eastern-Ukraine military assets at risk. Crimeans voted to join the Russian Federation - or is voting only "pure" when America does it (lol)? Is the USA the only country who is "allowed" to protect its sovereign citizens?