Only Vladimir Putin decides how much Russian treasure is spent for their military, so with the nice low oil prices these days (thanks to big and increasing U. S. production), Putin’s cash-flow is dwindling, which could cause him to pare-back his military, perhaps even to let up on Ukraine, but of course there’s no guarantee of that, yet U. S. military action on behalf of Ukraine really is out-of-the-question, it would be like Russia taking-over the Bahamas and the U. S. doing nothing about it.