Trump says he welcomes China, Russia help over NKorea

President Donald Trump on Friday welcomed Russian and Chinese help with North Korean nuclear negotiations, despite Kim Jong Un accusing the US of "bad faith" at a first summit with Vladimir Putin.

"I appreciate that Russia and China are helping us," he told reporters at the White House.

Putin's first summit with Kim on Thursday was seen as a response to the failure of a Kim-Trump meeting in Hanoi in February, where talks broke down without agreement.

But Trump indicated that he does not see China and Russia as rivals in the struggle to get North Korea to give up its nuclear arsenal.

"China is helping us because I think they want to. They don't need nuclear weapons right next to their country," Trump said.

"I think we're doing very well with North Korea. A lot of progress is being made," he added.

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