China has hit back in unusually strong terms at repeated calls from the United States to put more pressure on North Korea, urging a halt to what it called the “China responsibility theory”, and saying all parties needed to pull their weight.

Asked about calls from the United States, Japan and others for china to put more pressure on North Korea, Chinese Foreign Ministry Spokesman said it was not China ratcheting up tension and the key to a resolution did not lie with Beijing..

U.S President Trump took a more conciliatory tone at a meeting with Chinese President XI Jinping on Saturday, but he has expressed some impatience that China, with its close economic and diplomatic ties to Pyongyang, is not doing enough to rein in North Korea.