How has the Biden administration acted throughout all of this ? Give us your opinion of that.
As I said, I don't see much difference between Biden, Obama, Trump, Bush, Reagan and anyone else. May be, it's just a bit above my level of expertise and/or my salary.
It's more about capabilities not about intentions, and it seems to me, that any POTUS is more like a banner (or brand) rather than an actual decision-maker.
Actually, they all acted in regime "march eastward until you are stopped by the military force". "Drung nach Osten" as the Krauts say.
Basically, the strategic logic of the current wave seems to be quite simple. They want to eliminate Russia, and they don't want to be eliminated in return. Therefore, one of the ways from the "MAD-stalemate" (for both sides) is the first counter-force attack from the short distance by the medium-range missiles. For this point the USA need Ukraine and Georgia (as one of necessary but insufficient steps).
The USA had the choice:
1) wait until both Russia and China achieve overwhelming nuclear superiority over them (which might allow to start and win a nuclear war against the USA). If you do nothing it will happen before 2030. And it will mean the end of the US domination.
2) try to defeat Russia and defeat her fast (and it means necessity to take Ukraine and take it fast).
3) distract Russia from Pacific theatre to Europe by creating relatively small, but annoying provocations (like Ukrainian conflict)
4) make a mutually acceptable peace (starting with de-natofication of the eastern Europe).
As much as I can understand options 1 and 4 are hardly acceptable to the USA. Option 2 was a plan "A" but it failed in 2023 and it seems they have no plan "B" for this option. Option 3, as I guestimate, is their actual strategy now. "Allow Russians take the Europe, but they should pay the price and they shouldn't take anything but the scorched land. They shouldn't have an opportunity to avoid European war and for this, Europe should attack them first."
How good was Biden in the realisation of this strategy and could anyone did it better? I dunno (but I doubt that his personal competence or incompetence matters). Will Trump continue this strategy or he'll make a reliable mutually acceptable peace (option 4) or increase attacks Russia directly (option 2)? I dunno either. And I'm almost sure that his personal intentions don't matter. My bet, that he'll continue current policy, but, may be, after Ukraine he'll try to use Baltic states, Poland or Germany.