"I am now thinking hard about what response he could have expected when he allowed such eccentric words to trip off his tongue".
During the meeting President Moon Jae-in praised Trump's bellicose speech on Tuesday to the United Nations about the North Korean threat, in which he said America would "totally destroy" the rogue Asian state, saying that he USA had "responded in a very good way".
During his first speech at the United Nations General Assembly, Trump said the United States would "totally destroy" North Korea if forced to defend itself or its allies. Trump issued the warning of potential obliteration, and mocked the North's young autocrat as a "Rocket Man" on a "suicide mission".
Kim said: "I will surely and definitely tame the mentally deranged United States dotard with fire".
Kim had launched a salvo of threats aimed at the U.S. president on Thursday.
Theresa May has raised the prospect of backing military action against North Korea as she denounced the regime for its "outrageous proliferation" of nuclear weapons.
The Korean Central News Agency transmitted Kim's statement verbatim.
US President Donald Trump and US ambassador to the United Nations Nikki Haley speak during a meeting on United Nations Reform at the United Nations headquarters on September 18, 2017, in NY.
Hours after Kim released his statement, North Korea's foreign minister said the country may be planning to test a hydrogen bomb in the Pacific, the AP reported.
Tensions on the Korean peninsula have been steadily rising as a result of Pyongyang's repeated missile tests and nuclear blasts.
The order also will allow the U.S. to sanction those involved in industries, including fishing, technology, textiles and manufacturing, that finance the North Korean regime, as well as those involved in the operation of the country's ports or in exporting and importing goods and services. Last week, the U.N. unanimously passed fresh measures to punish the isolated nation economically, with the support of China and Russian Federation.
He said the order would also allow the U.S. to identify new industries - including textiles, fishing and manufacturing - as potential targets for future actions. Tensions between the USA and North Korea have steadily moved toward a boiling point, especially after North Korea exercised its strongest nuclear test yet on September 3.
He added he will consider the "highest level of hard-line countermeasure in history" against the United States.
Referring to the North Korean nuclear program, Trump said "tolerance for this disgraceful practice must end now".
"There is a need to avoid any action that will interfere with the pressure being applied on North Korea", an official quoted Abe as saying at the meeting.