North Korean Bomb

The North Korean government announces that they have successfully tested a hydrogen bomb that can be mounted on an intercontinental ballistic missile. Seismic readings lead experts to estimate the bomb to have a yield of roughly 120-kilotons, making the detonation one of the most violent in history. For reference, the bombings of Hiroshima and Nagasaki in 1945 amounted to roughly 45-kilotons in total.