The real test comes when Putin decides to take a bit more of Ukraine, bomb a little more of Syria, put even more forces on the border with the Baltic states.
Trade protectionism, domestic policies on immigration, even less positive involvement with climate change management are all things that I think the rest of the world will cope with however the foreign policy decisions are where we shall really see if Trump is that interested in serving his nation and the rest of the world or if he simply wanted to win the race and flick Obama the bird as payback for ripping into him over the birth certificate nonsense all those years ago.