In Japan, Trump leaves allies, enemies and staff guessing

Donald Trump came to meet Japan's emperor but it was the U.S. president who played the monarch in Tokyo as he pushed a personal brand of foreign policy leaving allies, foes and staff alike wondering what on earth to expect next.

A master of self-promotion, Trump has for decades made sure that everything he does -- from building skyscrapers to running the White House -- is all about him.

His diplomatic style in Japan, where he was given the honor of being the first foreign leader to meet new Emperor Naruhito, was no different.

At a joint press conference with Prime Minister Shinzo Abe on Monday, Trump took questions on some of the biggest challenges facing the United States and its close ally Japan.

Then he freewheeled.