The president has embarked upon an Indo-Pacific trip of numerous nations such as Japan, China, Vietnam and the Philippines.
In the afternoon, Trump and Japanese Prime Minister Shinzo Abe (shin-zoh AH'-bay) will meet over lunch and with their staffs, and hold a joint news conference.
In his maiden address to the UN General Assembly he threatened to "totally destroy" the North if it attacked the US or its allies. "One thing you people will say, that's not been a problem". Golf carts and J-pop ditties about pineapple-apple pens could be just the ticket.
Both leaders later tweeted images of their 9-hole encounter, with Abe saying that the "relaxed" nature of their game allowed them to have "candid" discussions on some "difficult" issues.
Today, Mr Trump will meet with anguished families of Japanese citizens snatched by Pyongyang's agents. "I would expect an answer very quickly". Dianne Feinstein, a member of the Senate Intelligence Committee.
"Americans do what we do best, we pull together", Trump said.
"We're going in with tremendous strength", Trump said, pointing to the booming stock market and encouraging jobs numbers. They include China's Xi Jinping, whom Trump has likened to "a king", and the Philippines' Rodrigo Duterte, who has sanctioned the extrajudicial killings of drug dealers.
US President Donald Trump shakes hands with a Japanese business leader at the US ambassador's residence in Tokyo, Japan. And nobody makes it like they make it in the United States. Public sentiment has wavered, with 44% of respondents in favor - down from 51% in a May survey posing a similar question - and 41% against, up from 36% previously. But Mr Trump also has begun highlighting the plight of the North Koreans. Abe's government fully supports Trump, who has said every option - including a military option - is on the table to deal with Pyongyang.
In South Korea, Trump will visit Camp Humphreys, a newly-expanded military base that will ultimately house many of the 28,500 U.S. troops on the peninsula.
The escalation of rhetoric, a departure from the conduct of past presidents, has undermined confidence in the U.S.as a stabilizing presence in Asia. A lot of beautiful brand new equipment is coming in. After that, he would hope to convince the next US leader to return to the fold.
"We want free and reciprocal trade but right now our trade with Japan is not free and it's not reciprocal and I know it will be and we've started the process", Trump said.
"I think they're great people". A rear admiral on the Joint Staff responded on behalf of the Defense Department, and said the amount of casualties would differ depending on the advance warning and the ability of U.S. and South Korea forces to counter North Korean attacks. "Your devotion, prowess, and expertise make you the most fierce and fighting force in the history of our world", he added.
President Trump waves as he boards Marine One at Kasumigaseki Country Club after playing golf with Japanese Prime Minister Shinzo Abe on Sunday..
Trump posted a short video from the golf course on Twitter and called Abe and Matsuyama "two wonderful people".
Many in the Asian capitals will view Trump warily.