回复 :The report said the analysis of seismic waves and the lack of sound waves clearly showed the quake was not caused by an artificial explosion, citing an unnamed weather agency official from the ROK

回复 :"It was true during the first 30 years of China's opening-up while China was attracting foreign investment, pollution was an issue," he said

回复 :In the statement, the DPRK reaffirmed its commitment to abandoning nuclear weapons and existing nuclear programs