North Korea says it has successfully carried out its first underground test of a hydrogen bomb – a more powerful weapon than an atomic bomb.
If true it would be its fourth nuclear test since 2006 and mark a huge advance in its nuclear capabilities.
The announcement was swiftly criticised by world leaders with South Korea calling it “a grave provocation to our national security”.
Continue reading at North Korea nuclear: State claims first hydrogen bomb test
Related article: IAEA Director General Yukiya Amano’s Statement on the DPRK’s Announcement of a Nuclear Test via IAEA