President Donald Trump begins his four-day trip to Japan on Saturday, becoming the first head of government to make a state visit, after Emperor Naruhito was crowned earlier this month.
On Sunday morning, the U.S. leader is set to meet Japanese Prime Minister Shinzo Abe, for a round of golf followed by a sumo match, before they sit down for summit talks the next day.
Trump tweeted from Air Force One that he intends to discuss trade and security issues.
While some observers say the trip won't amount to more than a friendly visit, others expect it to be more than a social call, amid talks of additional U.S. tariffs on Japanese automakers.
They say the two government leaders are also likely to discuss the stalled progress on denuclearization talks with North Korea.
Trump will wrap up his visit by meeting Emperor Naruhito on Monday to pay his respects.