Presumptive GOP nominee Donald Trump said on Tuesday that he is prepared to hold talks with North Korean supreme leader Kim Jong-un on Pyongyang’s nuclear program. Trump, however, refused to disclose details of his plans for North Korea.

“I would speak to him, I would have no problem speaking to him,” the BBC quoted Trump as saying. Trump’s remarks did not immediately get a response from North Korea’s mission to the United Nations. The billionaire also said he would urge North Korea’s only major economic and diplomatic ally, China, to help with the situation.

“I would put a lot of pressure on China because economically we have tremendous power over China,” Reuters quoted him as saying in an interview at the Trump Tower in Manhattan.

The move will mark a major shift in the US policy towards the isolated nation. Democratic frontrunner Hillary Clinton responded to Trump’s remarks, saying he has a “bizarre fascination with foreign strongmen.” One of Clinton’s aid said that Trump’s statement “made no sense,” the BBC reported.

North Korea has repeatedly breached the international law by testing nuclear weapons and threatening to strike against South Korea and the US.

At present, all contacts between the US and North Korea takes place through the senior officials and not at presidential levels. This contradicts Trump’s willingness to have a direct talk with North Korea’s supreme leader.

Trump also said in reference to his praises for Russia’s president Vladimir Putin in the past, that the president’s nice comments would have gone only that far.

“The fact that he said good things about me doesn’t mean that it’s going to help him in a negotiation. It won’t help him at all,” he said. He also said that he disapproved of Putin’s actions in eastern Ukraine and if he is elected president he would dismantle most of the US Dodd-Frank financial regulations.