The Blue House said that Mr Moon and Mr Trump had strongly condemned the latest missile launch by North Korea, and agreed that the two nations would work with the worldwide community to implement the latest UN Security Council's Resolution 2375, Mr Park said.
"If I were giving the president advice, I would have said avoid using 'Rocket Man, '" Schumer said during a press conference at the U.S. Capitol.
"The two leaders agreed to strengthen cooperation, and exert stronger and practical sanctions on North Korea so that it realizes provocative actions leads to further diplomatic isolation and economic pressure", Blue House spokesman Park Soo-hyun said in a televised briefing, Reuters reported.
President Donald Trump on Sunday mocked the leader of nuclear-armed North Korea as "Rocket Man" while administration officials expressed differing views about how to handle Pyongyang's weapons programs and bellicose threats. Presumably the "Rocket Man" reference was to the Elton John song from 1972.
"I think that North Korea is not going to give up its program with nothing on the table", said Senate intelligence committee member Dianne Feinstein, a California Democrat. "What has to happen is a senior American official or a trusted confidant of President Trump needs to get in the room with a senior North Korean official or confidant of Kim Jong Un".
Mattis said after Kim tested a hydrogen bomb earlier this month that the USA would answer any threat from the North with a "massive military response, a response both effective and overwhelming". They plan to meet this week at the U.N. General Assembly.
North Korea conducted its latest missile test on Friday.More news: Donald Trump Urges Latin American Leaders to Challenge Venezuela Dictator Nicolás Maduro
The White House said after Trump's tweet that he and Moon are committed to strengthening deterrence and defense capabilities, and maximizing economic and diplomatic pressure on North Korea.
"This regime is so close now to threatening the United States and others with a nuclear weapon, that we really have to move with a great sense of urgency on sanctions, on diplomacy and preparing, if necessary, a military option", McMaster told the "Fox News Sunday" program.
"None of us want war".
"If North Korea keeps on with this reckless behavior, if the United States has to defend itself or defend its allies in any way, North Korea will be destroyed - and we all know that", Haley added.
The global community has attempted to increase pressure on North Korea in recent weeks in response to its sixth and most powerful nuclear test on September 3.
"We have tried a couple of times to signal to them that we're ready, when they're ready", he said.