Nothing notably bad happens. Nuclear explosions are highly sensitive and engineered events. If you destroy the ignition mechanism, then it will become a dud. F

Nothing notably bad happens. Nuclear explosions are highly sensitive and engineered events. If you destroy the ignition mechanism, then it will become a dud. FWIW, there has been a number of nuclear explosion tests in our atmosphere: https://en.wikipedia.org/wiki/Tsar_Bomba https://en.wikipedia.org/wiki/Tsar_Bomba