Interesting analysis here of how it might go down: https://www.defenseone.com/threats/...warns-former-us-army-europe-commander/149530/
I assume you mean by the Russians. Given they are all NATO members and an invasion would mean at least a regional war and probably a major one I tend to doubt it.
I doubt Trump would have much choice. I've no doubt Congress would force the issue. And again you assume that Trump has any kind of special regard for Putin aside from flattering him (which IIRC Bush and Obama did as well).
You realize Mueller did that, right? The same Mueller Trump attacks on a daily basis like the guilt regard he is.
Near future? Not likely. Ye Olde Soviet invasion doctrine involved planning to roll over a couple of hundred miles of Western Europe, setting up peace talks and then rolling back a hundred miles with redrawn borders. Rinse and repeat until the shores of Portugal, taking the bet that NATO would rather lose some territory than risk a nuclear war So if we see further overt Russian military action in the Ukraine, we've cause for concern, if they're just keeping Eastern Ukraine 'busy', probably not.
As I said, doubtful but theoretically possible. Trump repeatedly saying he might not honor the NATO treaty does not help but I think most people know he is just an orange buffoon and that Congress would force his hand even if he is a corrupt Putin crony. The faster he is impeached for treason the better.
If we consider the Russian attack on our elections an act of war, then any American who knowingly aided and abetted that attack is indeed guilty of treason.
Interfering with the ability of the United States to conduct free and fair elections is a pretty direct assault on our sovereignty and constitution. I believe the CIA has always done so during the prosecution of (cold) war, so yes.
