SEOUL, SOUTH KOREA-Responding directly for the first time to President Donald Trump's threat at the United Nations to destroy nuclear-armed North Korea, its leader called Trump a "mentally deranged US dotard" on Friday and vowed the "highest level of hard-line countermeasure in history".
Earlier on the day, Mr. Kim blasted Mr. Trump as a "mentally deranged U.S. dotard" who will "pay dearly" for threatening to destroy North Korea.
The United Nations Security Council imposed further sanctions on North Korea last week in the wake of the nuclear test.
But Kim's release of any statement by himself in this style has never happened before and this suggests that North Korea will unlikely to back down from its weapons program and stand-off with the United States anytime soon.
Kim lashed out after Trump stunned the world on Tuesday when he used his maiden UNGA speech to warn the North Korea that Washington would "totally destroy" it if the United States or its allies were attacked.
Even after the sanctions and ever-rising rhetoric, when asked if there is still an opportunity for dialogue between the nations, Trump said "Why not?"
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.
Trump is scheduled to meet with Japanese Prime Minister Shinzo Abe and South Korean President Moon Jae-in Thursday.
Kim Jong Un was responding to the threat by the U.S. president to "totally destroy" the hermit kingdom if Pyongyang continued its belligerent path.
"No matter the changes in circumstance, no matter how long it takes, not matter the difficulties we face, China will always persist in the goal of denuclearising the peninsula, in moving towards talks", he said.
During their talks that lasted for about an hour, the three leaders agreed to lobby other U.N. member nations, including China and Russian Federation, which have called for greater dialogue with North Korea, to fully implement a U.N. Security Council agreement concerning North Korea. Despite Japan's proximity to North Korea, its currency regularly benefits when investor anxiety suddenly rises.