CCTV9英语新闻：朝鲜威胁要发动“新形式”的核试验（在线收听）

The Democratic People’s Republic of Korea has threatened to carry out a "new form of nuclear test" in response to US President Barack Obama’s visit to Asia. 

The country's official KCNA news agency quoted a Foreign Ministry statement, saying the US has brought "the dark clouds of nuclear war to the country". It says the DPRK will continue to bolster its nuclear deterrent, and carry out a "new form of nuclear test" as part of its inviolable right to self-defense.

The statement also blasted Obama’s tour, calling it "dangerous", aimed at tightening the US grip on the Asia-Pacific and bringing confrontation to the region. The DPRK conducted nuclear tests in 2006, 2009 and 2013, despite an international test ban, sanctions, and strong criticism.