I'm definitely anti-Trump. I participate frequently on another thread here about the daily Trump scandals (often more than one).
But I cannot see why this is such a big deal. Russia devoting resources to kill US soldiers in a proxy war in Afghanistan? Why wouldn't they? Is this supposed to be treated as an act of war? If we send Americans into a combat theatre, aren't we supposed to take steps to guard their safety?
I'll take a stab at an answer from my perspective:
The issue (to me at least) is not whether Russia would do such a thing (they definitely would). It's what our alleged commander-in-chief does about it (or doesn't, in this case).
Russia, as far as I know, is not a declared combatant in the Afghanistan theater. So, "going to war" with U.S. troops or backing those at war with the U.S. is a pretty serious, albeit completely expected, action for Russia to take. And the taliban is certainly not a righteous regime or cause in most civilized nations' eyes. Russia is supporting a proxy war for a murderous regime that would impose a society with perhaps the worst kinds of human rights abuses. It was not that many years ago when the taliban was hosting mass public hangings and beheading in soccer stadiums for those who would dare not follow their warped views of instituting Sharia laws. Of course, Russia backs all kinds of unrighteous regimes (see: Syria).
So sure, Russia is a very bad actor. Question is, why is our President seemingly so comfortable with that? In case after case, Trump bends over backwards not to offend Putin, even when they are paying bounties to having U.S. soldiers killed in a conflict which Russia is not a party to. Why? What does Russia have on Trump?