The people whining about Obama using diplomacy instead of military force to face down Russia over the Ukraine don’t know what the fuck they’re talking about. From Truman on down no US President has dared take on Russia directly. The US only threatens smaller countries, that can’t really hurt us. It’s only practical. When North Korea invaded South Korea 1950, we were all over that. The same in Vietnam, 15 years later. When Russia invaded Czechoslovakia in 1948 and Hungary in 1956 and Afghanistan in 1978, we didn’t do shit.
Russia can fight back, on approximately equal terms. We aren’t going to do squat about anything they decide to do along their own borders, no matter who’s president.