Kim Jong-un has said remarks by “deranged” US President Donald Trump have convinced him he is right to develop weapons for North Korea.

In an unprecedented personal statement, via state media, Mr Kim said Mr Trump would “pay dearly” for his recent speech to the UN.

The US president said on Tuesday that if America was forced to defend itself it would “totally destroy” North Korea.

Mr Trump also mockingly called Mr Kim a “rocket man” on a “suicide mission”.

The two countries have been engaging in increasingly heated rhetoric in recent months.

North Korea has been testing missiles at an unprecedented rate, and conducted its sixth nuclear test despite international condemnation.

North Korean Foreign Minister Ri Yong-ho, who had earlier compared Mr Trump’s speech to “the sound of a barking dog”, has warned that Pyongyang could test a hydrogen bomb in the Pacific Ocean in response to the US president’s threat.

“It could be the most powerful detonation of an H-bomb in the Pacific,” Mr Ri said, quoted by South Korea’s Yonhap news agency.

However, he added: “We have no idea about what actions could be taken as it will be ordered by leader Kim Jong-un.”

• ‘Dotard’ Trump? The story of ‘rocket man’ Kim’s insult

• What missiles and nuclear weapons does North Korea have?

• North Korea crisis in 300 words

• What are North Korea’s other WMDs?

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By North Korea analyst Ankit Panda

The prospect of a hydrogen bomb being tested in the Pacific raises a terrifying spectre – one that North Korea-watchers have mulled for some time, but which did not seem realistic until this year.

Kim Jong-un could conduct an atmospheric nuclear detonation in the Pacific Ocean.

There are two mechanisms for a test like this. One is for Kim Jong-un to mount the nuclear device he showed the world before his 3 September nuclear test and fire it over Japan, into the Pacific Ocean, and demonstrate a credible thermonuclear capability.

Presumably, witnessing this feat would “tame” Trump into accepting the “equilibrium” that North Korea alluded to earlier this week – a state of stable nuclear deterrence.

Given the inadequacy of existing US and Japanese ballistic missile defence systems, it is far from a sure thing that such a test could be intercepted.

The risks are immense. Civil aviators and mariners in the target area may perish, given that North Korea does not offer international warning of its missile launch plans – unlike other states that routinely test ballistic missiles.

The environmental damage and fallout could be catastrophic. Moreover, should the missile fail over Japan – or prematurely detonate – the consequences would effectively guarantee a nuclear war in retaliation.

North Korea could choose not to use a missile for a test like this to mitigate some risk, but still demonstrate an awe-inspiring capability.

A second mechanism could be to sail a ship out to sea with a nuclear device and detonate it. Here, the odds that US intelligence would detect and interdict the North Korean vessel are higher.

What would a nuke in the Pacific mean?

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Mr Kim said in an English statement carried by state news agency KCNA that Mr Trump’s remarks “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”.

The Pacific island of Guam is home to the US Air Force’s Andersen air base/Reuters

He said “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”, North Korea would consider the “highest level of hard-line countermeasure” to make Mr Trump “pay dearly for his speech”.

Media captionTrump: ‘Rocket Man’s suicide mission’

He ended by saying he would “surely and definitely tame the mentally deranged US dotard with fire”.

Experts say this is the first time a North Korean leader has made a direct address to an international audience.

The statement came shortly after the country’s delegation arrived in New York for the UN General Assembly. Analysts say that for this reason it merits serious and thorough consideration.

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What is a dotard?

• The Oxford English Dictionary defines it as “an old person, especially one who has become weak or senile”

• Its first known use was in the 14th Century and initially meant “imbecile”, according to the US Merriam-Webster Dictionary. It stems from the Middle English word “doten” which means “to dote”

• Searches for the term have been “high as a kite” since Mr Kim released his statement, Merriam-Webster tweeted

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Mr Kim’s comments prompted swift criticism from the Japanese government.

Chief Cabinet Secretary Yoshihide Suga said in a news conference on Friday: “North Korea’s remarks and behaviour are provocative to regional and international security, and they are absolutely unacceptable.”

North Korea has fired two ballistic missiles over Japan in the past month, raising regional tensions even further.

• How do you defend against Pyongyang?

• Sanctions won’t stop us, warns N Korea

• Can the world live with a nuclear North Korea?

Mr Trump on Thursday signed a new order boosting sanctions against North Korea, where the US treasury would target firms and financial institutions doing business with Pyongyang.

He said: “For much too long North Korea has been allowed to abuse the international financial system to facilitate funding for its nuclear weapons and missile programs.”

The UN Security Council had approved new rounds of sanctions earlier this month aimed at starving North Korea of fuel and income, which were in response to Pyongyang’s much-condemned sixth nuclear test on 3 September.

North Korea was one of the top issues dominating the agenda at the UN General Assembly in New York, where several speakers called for a de-escalation of tensions.

Russian Foreign Minister Sergei Lavrov warned that “military hysteria” over the nuclear testing would lead to “disaster”, while China’s Foreign Minister Wang Yi told Pyongyang not to go in a “dangerous direction”.

Mr Wang told the UN on Thursday that there should be no new nuclear weapons on the Korean peninsula “whether it is in the North or the South”

Source:BBC