Some of you folks are well and truly loopy, with memories full of holes if you think Trump would have stood up to Putin! All the evidence points to exactly the opposite - who was it that tried to get Russia back into the G8 (G7 at the time)? Trump of course; Putin's lap dog. Trump stand up to Putin my arse!
The mistake you're making is looking at it as black/white, 0/1, wet/dry, etc. The world isn't that simple, yes Trump was Putin's lap dog when it came to trade/economic matters, but on matters of defence/military he was harder on Russia than any president since Reagan, Putin was outright afraid to mess with him especially after Trump humiliated him in Syria. If you don't know what I'm referring too there, Putin was trying to strongman in Syria and act all big for Assad, Trump basically called him and said "I'm about to blow up that Syrian base your boys are at, tell them they got x mins to leave and not to warn the Syrians or I won't call you next time". Putin not only got made to look like a weak idiot but got made to look like a weak idiot in front of Assad, the very dictator he was trying to impress because he had to let all of Assad's dudes get missiles up the *** to avoid upsetting Trump.
This is the reason Putin delayed doing this until Trump left office, despite the delays having obviously been more beneficial to Ukraine than Russia.