President Trump announces a new series of sanctions against North Korea in New York on Thursday, Sept. 21, 2017. (Screen grab from C-SPAN)

(CNSNews.com) - In their ongoing war of words, President Trump is the latest to ante-up, calling North Korean dictator Kim Jong-un a "madman" in one of his early Friday morning tweets:

"Kim Jong-un of North Korea, who is obviously a madman who doesn't mind starving or killing his people, will be tested like never before!" Trump tweeted around 6:30 a.m.

This follows Kim's rare, personal response to Trump's speech at the United Nations on Tuesday, when Trump warned that "we will have no choice but to totally destroy North Korea” if the rogue regime forces the U.S. to defend itself or its allies.

On Friday, responding to Trump, Kim described the U.S. president as “mentally deranged” and a “dotard,” and said the U.S. would “pay dearly” for his threat.

Kim warned his regime may take “a corresponding, highest level of hard-line countermeasure in history,” according to the statement released by its official KCNA news agency.

“Whatever Trump might have expected, he will face results beyond his expectation,” Kim said. “I will surely and definitely tame the mentally deranged U.S. dotard with fire.”

Trump, in his U.N. speech, mocked Kim as "rocket-man." Kim, in his statement, said "a frightened dog barks louder."

Kim's full statement, as published on KCNA, which monitors North Korean media, reads as follows:

The speech made by the U.S. president in his maiden address on the UN arena in the prevailing serious circumstances, in which the situation on the Korean peninsula has been rendered tense as never before and is inching closer to a touch-and-go state, is arousing worldwide concern.

Shaping the general idea of what he would say, I expected he would make stereo-typed, prepared remarks a little different from what he used to utter in his office on the spur of the moment as he had to speak on the world's biggest official diplomatic stage.

But, far from making remarks of any persuasive power that can be viewed to be helpful to defusing tension, he made unprecedented rude nonsense one has never heard from any of his predecessors.

A frightened dog barks louder.

I'd like to advise Trump to exercise prudence in selecting words and to be considerate of whom he speaks to when making a speech in front of the world.

The mentally deranged behavior of the U.S. president openly expressing on the UN arena the unethical will to "totally destroy" a sovereign state, beyond the boundary of threats of regime change or overturn of social system, makes even those with normal thinking faculty think about discretion and composure.

His remarks remind me of such words as "political layman" and "political heretic" which were in vogue in reference to Trump during his presidential election campaign.

After taking office Trump has rendered the world restless through threats and blackmail against all countries in the world. He is unfit to hold the prerogative of supreme command of a country, and he is surely a rogue and a gangster fond of playing with fire, rather than a politician.

His remarks which described the U.S. option through straightforward expression of his will have convinced me, rather than frightening or stopping me, that the path I chose is correct and that it is the one I have to follow to the last.

Now that Trump has denied the existence of and insulted me and my country in front of the eyes of the world and made the most ferocious declaration of a war in history that he would destroy the DPRK, we will consider with seriousness exercising of a corresponding, highest level of hard-line countermeasure in history.

Action is the best option in treating the dotard who, hard of hearing, is uttering only what he wants to say.

As a man representing the DPRK and on behalf of the dignity and honor of my state and people and on my own, I will make the man holding the prerogative of the supreme command in the U.S. pay dearly for his speech calling for totally destroying the DPRK.

This is not a rhetorical expression loved by Trump.

I am now thinking hard about what response he could have expected when he allowed such eccentric words to trip off his tongue.

Whatever Trump might have expected, he will face results beyond his expectation.

I will surely and definitely tame the mentally deranged U. S. dotard with fire. -0-he full text of the statement reads:

The speech made by the U.S. president in his maiden address on the UN arena in the prevailing serious circumstances, in which the situation on the Korean peninsula has been rendered tense as never before and is inching closer to a touch-and-go state, is arousing worldwide concern.

Shaping the general idea of what he would say, I expected he would make stereo-typed, prepared remarks a little different from what he used to utter in his office on the spur of the moment as he had to speak on the world's biggest official diplomatic stage.

But, far from making remarks of any persuasive power that can be viewed to be helpful to defusing tension, he made unprecedented rude nonsense one has never heard from any of his predecessors.

A frightened dog barks louder.

I'd like to advise Trump to exercise prudence in selecting words and to be considerate of whom he speaks to when making a speech in front of the world.

The mentally deranged behavior of the U.S. president openly expressing on the UN arena the unethical will to "totally destroy" a sovereign state, beyond the boundary of threats of regime change or overturn of social system, makes even those with normal thinking faculty think about discretion and composure.

His remarks remind me of such words as "political layman" and "political heretic" which were in vogue in reference to Trump during his presidential election campaign.

After taking office Trump has rendered the world restless through threats and blackmail against all countries in the world. He is unfit to hold the prerogative of supreme command of a country, and he is surely a rogue and a gangster fond of playing with fire, rather than a politician.

His remarks which described the U.S. option through straightforward expression of his will have convinced me, rather than frightening or stopping me, that the path I chose is correct and that it is the one I have to follow to the last.

Now that Trump has denied the existence of and insulted me and my country in front of the eyes of the world and made the most ferocious declaration of a war in history that he would destroy the DPRK, we will consider with seriousness exercising of a corresponding, highest level of hard-line countermeasure in history.

Action is the best option in treating the dotard who, hard of hearing, is uttering only what he wants to say.

As a man representing the DPRK and on behalf of the dignity and honor of my state and people and on my own, I will make the man holding the prerogative of the supreme command in the U.S. pay dearly for his speech calling for totally destroying the DPRK.

This is not a rhetorical expression loved by Trump.

I am now thinking hard about what response he could have expected when he allowed such eccentric words to trip off his tongue.

Whatever Trump might have expected, he will face results beyond his expectation.

I will surely and definitely tame the mentally deranged U. S. dotard with fire.