His love of Putin was just about the only thing Trump showed consistency on during his first term, although even there he wasn't able to stay on message 100% of the time. I wouldn't be surprised by Kompromat, but equally wouldn't be surprised if it was just about money. He's been bailed out of bankruptcy more than once by shady overseas money.

As to what he says about Ukraine... I've stopped paying attention to anything he says. He lies so much it's a waste of energy. I do care what he does and will be very pleasantly surprised if he doesn't make a massive mess of the Ukraine situation and manage to embolden every dictator out there to invade their neighbours.