Russian provocateurs in Eastern Ukraine presage invasion?

Pro-Russian "demonstrators" in two eastern Ukrainian provincial cities have stormed and occupied government buildings and raised the Russian flag, perhaps heralding a "visit" by Russian military forces to "protect" Russians in these areas.  Many neocons are perhaps rejoicing at this concrete evidence of a possible further and imminent Russian invasion of Ukraine, hoping for a re-ignition of the Cold War, and many American right wingers actually admire Putin as a model leader for the U.S. as well. Perhaps, the neocon logic goes, a new Cold War will frighten Americans back into a militaristic mode, and the American version of Putin will arise to lead them.  Somehow, even if such were to happen, don't look for him to be named Bush.