For more analysis, Mr. Teng Jianqun, from China Institute of International Studies, joins us now in the studio.

Q1: South Korea says this fifth nuclear test conducted by the DPRK is the biggest so far. In what other ways has the DPRK advanced in making nuclear weapons?

Q2: This was the second nuclear test in the DPRK this year. Can the international community stop this happening again and denuclearize the Korean Peninsula?