Trump had earlier threatened Pyongyang with "fire and fury".
Trump on September 21 signed an executive order expanding sanctions on North Korea by targeting individuals and companies that trade with Pyongyang. The president said "tolerance for this disgraceful practice must end now". Last week, China announced that its central banks would stop doing business with the country. -North Korea nuclear crisis, no one can be sure where this would lead or whether the North will even carry out its threat.
Kim characterised Trump's speech to the world body as "mentally deranged behaviour".
It's the latest escalation in a suddenly personal war of words between the two leaders that's stretched back weeks, unfolding as North Korea has showcased an enhanced nuclear missile capability.
Meanwhile, the President has called allegations of Russian meddling in the United States presidential election a "hoax" and insisted the media was the "greatest influence" on last year's campaign. Ri was scheduled to address the UN General Assembly on Saturday, a day later than previously scheduled. Moon urged North Korea to abandon its nuclear weapons and seek dialogue.
The Hawaii Emergency Management Agency said in the event of an attack you need to have 14-days worth of supplies like water and canned goods.
Still, when he sat down later with Trump, he complimented the president's "very strong" United Nations address, saying it would "help to change North Korea".
United Nations and worldwide order under threat, Julie Bishop warns
China, responsible for about 90 percent of North Korea's trade, serves as the country's conduit to the global banking system. Meanhwhile, North Korean leader Kim Jong-un and his USA counterpart Trump have exchanged strong words for each other.
PRESIDENT DONALD TRUMP: The United States has had representatives working on this problem for over 25 years.
North Korea's Foreign Minister Ri Yong-ho on Wednesday termed Trump's speech at UNGA as "sound of a dog barking". They have flattered China - hoping to persuade it to put pressure on its "client" in Pyongyang - and (particularly under Trump) threatened it with economic punishment for failing to do so.
South Korean media called it the first such direct address to the world by Kim.
Fears of a military confrontation are increasing.
Earlier this month, North Korea conducted its sixth and most powerful nuclear test to date and it was subsequently slapped with fresh, tough United Nations sanctions. Nuclear weapons are the most powerful devices ever developed by human beings.
Still, the impasse is no closer to being resolved.
Several news outlets this month have reported Chinese steps to restrict banking transactions, but the government hasn't made a formal announcement. Russia's foreign minister is echoing that, saying there is no alternative to diplomacy.
Pyongyang's stated aim is to be able to target the U.S. mainland and the nation has flaunted the advances in its weapons programme in recent weeks, with the September test of what it said was a miniaturised H-bomb capable of being loaded onto a rocket.