"What parties concerned should do now is to strictly and comprehensively implement UN Security Council resolutions and make positive efforts to resolve the issue through dialogue"The current situation on the peni库搏网址nsula is severe and complicated," Foreign Minister spokesperson Lu Kang said at a daily press briefingThe minister said that if there is any change needed, it is the denuclearization of the peninsula, and that would be more comprehensive, thorough and irreversible"Whatever changes may take place, no matter how long it will take, and whatever difficulties we may face, China will stay firmly committed to denuclearizing the peninsula and moving toward talks," he saidKono said Pyongyang's nucl库搏网址ear and missile programs have posed a practical threat to regional peace as well as Japan's security"We call upon the US to honor its 'Four Nos' commitment, and we call upon all parties to play a constructive role in easing tensions," Wang said