A craving for international prestige, a decade-long Obama rivalry and perhaps a dash of provocation: a mercurial melange of factors is at play in Donald Trump's obsession with the Nobel Peace Prize.

While the U.S. seems to consider North Korea a low priority at the moment, South Korea has been bending over backward to win ...

Political leaders from Israel, Pakistan, and now Cambodia have said they would nominate Trump for the Nobel. How would this be done, and is there precedent for it?