Most Western leaders don't seem to realize that trying to build relations with Russia is like trying to build relations with a white shark: you can try for a while, but chances are it will only agitate the shark, and you will end up fighting a much more aggressive beast than it was before.
Russian government is like a school bully: the more you try to be nice to it, the more it realizes that it can get away with anything, and the more it will poison your life. Bush tried to build relations and failed, which resulted in a disaster in Georgia; Obama tried, and we got Ukraine, Crimea and Syria things. If Trumpet now tries, then who knows what else happens, but it is unlikely to be good.
If Trump gets impeached early, then there is a chance for pragmatic foreign policies for once. As much as I dislike Pence, he seems to understand the international relations, and he doesn't seem like a guy who will be nice to bullies.