North Korean leader Kim Jong-un has accused the US of acting in “bad faith” at his summit with Donald Trump in Vietnam earlier in the year.

Mr Kim made the comments during talks on Thursday with Russian president Vladimir Putin, who he met for the first time in Vladivostok.

According to a report from the nation’s state-run Korean Central News Agency (KCNA), Mr Kim told the Russian president “that the situation on the Korean peninsula and the region is now at a standstill, and has reached a critical point”.

He added that this was because “the US took a unilateral attitude in bad faith at the recent second DPRK-US summit talks” which took place in Hanoi two months ago.

Mr Kim also told the Russian president that “peace and security on the Korean Peninsula will entirely depend on the US’s future attitude, and the DPRK [North Korea] will guard itself for every possible situation”.

Kim-Putin summit: Leaders meet for first talks in Russia Show all 10 1 /10 Kim-Putin summit: Leaders meet for first talks in Russia Kim-Putin summit: Leaders meet for first talks in Russia Russian President Vladimir Putin and North Korean leader Kim Jong Un pose for the media prior to talks in Vladivostok, Russia EPA Kim-Putin summit: Leaders meet for first talks in Russia Russian President Vladimir Putin and North Korean leader Kim Jong Un pose for the media prior to talks in Vladivostok, Russia AP Kim-Putin summit: Leaders meet for first talks in Russia Putin and Kim walk on campus of the Far Eastern Federal University prior to talks AFP/Getty Kim-Putin summit: Leaders meet for first talks in Russia Kim Jong Un presents Putin with a traditional Korean sword as a gift AP Kim-Putin summit: Leaders meet for first talks in Russia Putin and Kim Jong Un share a toast AP Kim-Putin summit: Leaders meet for first talks in Russia Putin and Kim prior to talks in Vladivostok Reuters Kim-Putin summit: Leaders meet for first talks in Russia Journalists watch a live as North Korean leader Kim Jong Un and Russian President Vladimir Putin hold talks AP Kim-Putin summit: Leaders meet for first talks in Russia Putin and Kim prior to talks in Vladivostok AP Kim-Putin summit: Leaders meet for first talks in Russia Who did it better? Getty Kim-Putin summit: Leaders meet for first talks in Russia Putin earlier met with Kim Jong Un's father and former North Korean leader Kim Jong Il in 2002 AP

Mr Putin, who has intimated he would be interested in playing a bigger role in helping to break what has become a new stand-off with Washington, is said to have accepted an invitation to visit North Korea at a “convenient time”. KCNA also claimed that Mr Putin had credited Mr Kim’s diplomatic moves with both the US and South Korea for stabilising the situation on the peninsula.

However, no specific proposals have been released from either Pyongyang or Moscow, suggesting there has been no significant shift in Mr Kim’s position that Pyongyang needs nuclear weapons to protect its national security.

Mr Putin has said that Mr Kim is willing to give up its nuclear programme but not without ironclad security guarantees and a multi-national agreement. That is the position Mr Kim has laid out to Mr Trump during his two summits, one in Singapore last year and the other in Vietnam in February.

While Mr Trump and Mr Kim spent a significant proportion of last year praising each other’s diplomatic efforts – a contrast to the nuclear-tinged threats the pair traded in 2017 – the last few months have been characterised by a significant cooling of relations.

Donald Trump told reports at the White House on Friday: “I think we're doing very well with North Korea. A lot of progress is being made.”

“I appreciated President Putin's statement yesterday. He wants to see it done also. I think there's a lot of excitement for getting a deal done with North Korea,” he said.

While Mr Trump has said he could welcome input from Moscow, it would complicate matters given that Mr Putin has frequently been critical of the international sanctions being used to keep Pyongyang in check.

Part of the reason for Mr Kim’s visit to Russia was to ask for financial support or a pact to work around the sanctions. More than 10,000 North Korean workers are set to have to leave Russia by the end of the year under a UN framework, damaging a significant source of income for Pyongyang.

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The Kremlin intends to brief the US on the contents of the summit – which ended with Mr Kim leaving more than four hours earlier than anticipated on Friday with no reason given. Deputy foreign minister Sergei Ryabkov told the RIA Novosti news agency they were just waiting for the Russian delegation to return to Moscow.