While media re-create the Cold War and Stalinize Putin so that Americans have a good News Movie to watch 24/7, and a old/new villain to hate and fear, it pays to resist this diversion and stay focused on what's really threatening America and the entire world -- State power, interventionism, socialism, dictators, militarism. If we get our house in order maybe we can inspire other nations to live freely and peacefully, but we're headed toward, or already bogged down in, the same socialist/statist/interventionist/militarist nightmare.
All nations can do much better if they limit the power of government and learn to live in free cooperation with each other, reducing government to protectors of individual rights and borders. There will always be some nation or group of people who wish to do harm, but all serious, civilized, industrialized nations ought to be disgusted and completely overwhelmed with statist failures at home and the violent results of interventionism abroad. Developing nations should see what's happening and yearn for liberty and inclusion in free trade not controlled by super-power cronyism. Nations can cooperate and prosper in free trade just like individuals can cooperate and prosper in a free market.
Ukraine is a regional problem -- America would send troops into Mexico if the current President of Mexico had been otherthrown by revolutionaries supported by South America, Cuba and Russia. Let's not lose sight of the bigger picture, because these conflicts are symptoms of fundamental problems, and until the fundamental problems of State power are dealt with, these symptoms will continue to appear and each intervention will cause more symptoms and more interventions and more symptoms and more... until WWIII breaks out and violent insanity returns that might not leave much at all standing.
It's all the US can do right now to turn around our country and avoid complete collapse.