Just a strawman. No one said anything about sending troops. With this logic, you undermine the conservative interpretation of the cold war. Any reaction to the Soviets ought to be met with isolationism and defeatism. That is your position, while stupidly accusing people of wanting to send in "troops,' as if that's the only thing that can be done.
You're behind times:
Obama orders American ‘military advisors’ to support Ukraine against pro-Russian rebels
The Cold War was a different conflict, in which many folks around here apparently insist on re-living. The USSR was ideologically committed to world domination, and we had to act to prevent a complete global takeover by the Communists. Moreover, we had the moral authority and the economic, political, and military might with which to first contain and then defeat the Soviets.
Putin is not a Communist anymore, but a neo-Tsarist, whose goal is to rebuild the old Russian Empire, circa January 1917. He wants a European and Asian hegemony, not a complete takeover of the world. Hence, the Ukrainian conflict, which the West set off anyway by meddling there, is regional in nature, and none of our business. Additionally, even if it was our business, the U.S. no longer has the moral authority, as well as the economic and military power, to do anything about it, the current Obama regime.