Donald Trump has warned that the US will take unilateral action to eliminate the nuclear threat from North Korea unless China increases pressure on the regime in Pyongyang.
In an interview with the Financial Times, the US president said he would discuss the growing threat from Kim Jong Un's nuclear programme with Xi Jinping when he hosts the Chinese president at his Florida resort this week, in their first meeting.
"China has great influence over North Korea. And China will either decide to help us with North Korea, or they won't," Mr Trump said in the Oval Office. "If they do, that will be very good for China, and if they don't, it won't be good for anyone."
But he made clear that he would deal with North Korea with or without China's help. Asked if he would consider a "grand bargain" — where China pressures Pyongyang in exchange for a guarantee that the US would later remove troops from the Korean peninsula — Mr Trump said: "Well if China is not going to solve North Korea, we will. That is all I am telling you."
The White House views North Korea as the most imminent threat to the US after Barack Obama warned his successor about the progress Pyongyang had made developing long-range missiles and nuclear weapons.
"There is a real possibility that North Korea will be able to hit the US with a nuclear-armed missile by the end of the first Trump term," KT McFarland, the deputy White House national security adviser, told the FT in a separate interview.
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While Mr Trump is increasingly worried about North Korea, his view on Europe has moderated. He stressed that Brexit would be a "great deal for [the] UK and . . . really good for the European Union" but said he was less convinced that other countries would follow the UK out of the EU. "I think that it [the centre] is really holding. I think they have done a better job since Brexit."
Ahead of the US-China summit, Mr Trump raised hopes that he would reach some kind of deal with Mr Xi, despite heavy criticism about China's trade surplus and exchange rate policy. "I have great respect for him. I have great respect for China. I would not be at all surprised if we did something that would be very dramatic and good for both countries and I hope so."
The National Security Council has completed a review of options on North Korea that Mr Trump ordered after his inauguration, according to two people familiar with the review. One of those people said the review had been accelerated to have the options ready for the Trump-Xi summit.
Mr Trump said it was "totally" possible for the US to tackle North Korea without China. Asked if that meant dealing with Pyongyang one on one, he said: "I don't have to say any more. Totally."
Barring a pre-emptive strike on North Korea — which the administration will not rule out since all options are on the table — many experts believe the US needs Chinese help as Beijing has the most sway over Pyongyang. But Washington could consider alternatives, ranging from more effective sanctions to various kinds of more controversial covert action.