Russia will never easily give up it’s black sea warm water ports. From there they ship weapons through Turkey and ultimately to Syria, Iran, and Afganistan. Also the gas pipelines that feed Europe end there. If not a recognizable American interest now, this will become an American interest when Russia demands higher cost for it’s energy and those market conditions double energy prices Stateside, or when an Islamoterrorist organization launches a Russian nuke at America.
America has as much petro and natural gas reserves in it's own territory as Russia, so paying any price the Russians may impose is purely voluntary on our part for putting the progressive leftist traitors in charge of the US government.
However, Russia does have the power to punish Europe's Socialists, Fascists, Aristocrats, and Ruling Elite. How many Americans and how much of their tax money should we send to Islamicize Europe?
...or when an Islamoterrorist organization launches a Russian nuke at America.
Good thing we don't need to worry about Pakistani nukes.