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View more articles by Dagyum Ji
Dagyum Ji was a senior NK News correspondent based in Seoul. She previously worked for Reuters TV.
North Korea on Sunday announced the successful test of a hydrogen bomb that can be placed on an intercontinental ballistic missile (ICBM), in a broadcast on Korean Central Television (KCTV) at 1500 local time.
The test represents North Korea's sixth in history. Pyongyang previously conducted nuclear tests in 2006, 2009, 2013, and two in 2016, with explosive yields of less than one kiloton, 2-4 kilotons, 6-9 kilotons, 7-10 kilotons, and 20-30 kilotons, respectively.