The ambassador also said China will never recognize the DPRK as a nuclear state and opposes nuclear weapons anywhere on the Korean Peninsula"Honestly, I think the United States should be doing … much more than now, so that there's real effective international cooperation on this issue," Cui saidnba网址登录"Everybody else will have to do their share; they cannot leave this issue to China alone," Cui saidThe ambassador said China has done its best to implement the UN Security Council resolutions in a strict and full fashion, while pushing for relevant parties to resolve problems through peaceful negotiations"China is notnba网址登录 the driver behind the escalation of the tensionsAll relevant parties should remain calm and avoid actions that intensify tensions," Foreign Ministry spokeswoman Hua Chunying said after Pyongyang fired a ballistic missile that flew over northern Japan and landed in the Pacific Ocean earlier in the day