The last American president to have been awarded the Nobel Peace Prize was honored less for something tangible he had achieved, and more for who he was and what he represented. President Barack Obama, the Nobel committee declared in 2009, has “created a new climate in international politics.” If President Donald Trump is not awarded the Nobel Peace Prize, it would be reasonable to suspect that the reason is similar. Trump also created a “new climate in international politics,” just in a way that’s much less appealing to the judges in Scandinavia. So maybe his chances of receiving the prize...