What will Trump do? My guess is that he is telling both Netanyahu and Putin regarding their current wars: "Cool it for now. You are winning. Find a position you can defend and regroup your forces. You can always continue your conquests later. Meanwhile you and I will be seen as peacemakers."
As indicated by his rhetoric, Trump will continue practices from his first term: Threaten allies like NATO, Taiwan, South Korea, Canada, Australia, New Zealand, and maybe even Israel with abandonment if they don't do things for him, and threaten adversaries like Iran with nuclear annihilation if they continue to threaten the U.S. What he will do about North Korea isn't clear, but I think he will try to control Kim by continuing their "love affair".