What If North Korea Launched a Nuclear Bomb Minute by Minute<br />What nuclear weapons does North Korea have? The last time North Korea tested a nuclear bomb was in 2017. The explosion at its Punggye-ri test site had a force, or "yield", of between 100-370 kilotons. A 100 kiloton bomb is six times more powerful than the one the US dropped on Hiroshima in 1945.North Korea conducted six nuclear weapons tests between 2006 and 2017.
