Talks between Donald Trump and Kim Jong Un have been cut short on day 2 of their second summit after failing to make an agreement.

Russian state media has praised North Korean leader Kim Jong-un while slamming US President Donald Trump following the duo’s failed summit in Vietnam.

While labelling Trump a “clown”, Kim was commended for his achievements, in particular drawing the US President to the bargaining table.

Trump failed to convince the North Korean leader to denuclearise at last week’s summit and said the North Korean leader had unacceptable demands in regards to US-led sanctions.

North Korean officials hit back at Trump’s claims that “great progress” had been made, saying they had made realistic proposals, and that their leader “may have lost his will (to continue) North Korea-US dealings.”

Appearing on Russia’s 60 Minutes equivalent, the country’s former ambassador to North Korea, Gleb Ivashentsev, said 35-year-old Kim had “[forced] the head of the largest imperialist nation to negotiate with him as an equal,” an achievement not seen by Kim’s father or grandfather.

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The ex diplomat said he believed the two-day summit was designed as a distraction from the testimony of Trump’s former lawyer and “fixer’ Michael Cohen and the southern border wall.

Centre for Korean Studies expert Konstantin Asmolov explained given Trump may soon no longer lead the US, there was little reason for Kim to agree to a deal.

“If Kim conceded anything, then Trump’s successor might say that everything that this clown [Trump] has signed was not in our [US] national interests and then Kim would end up in Gaddafi’s (the overthrown and now dead leader of Libya’s) position,” Asmolov told The Daily Beast.

Russian military expert and the Editor of National Defense magazine Igor Korotchenko also ripped into Trump, labelling the summit’s outcome a failure for the former reality-TV star while trumpeting a victory for Kim.

And Dimitry Kiselyov - host of Russian news show Vesti Nedeli - roasted Trump’s foreign policy approach, saying there were “nothing but failures at every turn”.

“Trump miraculously managed to worsen relations on all fronts: with the European Union, China, Russia. Total failure in Syria. The same with Turkey. Failure with Iran and failure with Venezuela,” Kiselyov said, according to The Daily Beast.

“Trump, who calls himself the ‘master of the deal,’ left Vietnam empty-handed.”

It emerged yesterday that South Korean intelligence agencies had detected signs that North Korea is restoring part of a missile launch site it began to dismantle after the first summit with US President Donald Trump last year.

South Korea’s Yonhap News Agency quoted politicians briefed by South Korea’s National Intelligence Service as saying the work is taking place at the Tongchang-ri launch site and involves replacing a roof and a door at the facility.