North Korea claims it has successfully tested a hydrogen bomb

North Korea gave the international community a jolt on Wednesday morning local time when, it claims, it successfully tested a miniature hydrogen bomb. If true, this would indicate that one of the world's most dangerous and isolated nations has made significant improvements in its ambitions to weaponize. Originally thought to have been an earthquake, the South Korean meteorological administration claimed the incident was an "artificial earthquake" near Punggye-ri — the site that North Korea had used for its previous three nuclear tests. The United States Geological Survey (USGS) showed a 5.1 magnitude quake 21km (13 miles) away from North Korea's city of Sungjibaegam.