US key to DPRK nuclear issue

On Wednesday, President of the Republic of Korea Park Geun-hye asked Chinese President Xi Jinping to persuade the Democratic People's Republic of Korea not to conduct a fourth nuclear test when US President Barack Obama visits the ROK.

Concern has grown in the ROK that the DPRK "could spark an arms race and a nuclear domino effect that could change the security landscape in Northeast Asia".

China and the ROK have entered the era of best-ever relationship, and the DPRK's nuclear tests pose a threat not only to the ROK, but also China's border security.