U.S. President Donald Trump on Monday said China may be “exerting negative pressure” on a denuclearization deal with North Korea, as part of a wider dispute with Washington over trade.

Trump added over social media that he believed North Korean leader Kim Jong was committed to denuclearizing and that he would keep to the terms agreed upon at June 12 summit in Singapore.

“I have confidence that Kim Jong Un will honor the contract we signed &, even more importantly, our handshake. We agreed to the denuclearization of North Korea,” Trump tweeted.

“China, on the other hand, may be exerting