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The most powerful class of weapon currently known to exist are thermonuclear weapons (also termed fusion weapons or hydrogen bombs).

The largest thermonuclear weapon was developed by the Soviet Union and had a yield of 50 megatons (equivalent to the energy output from detonating 50x106 tons of TNT). It was designated AN602 and apparently nicknamed "IVAN" by its creators.

Only one weapon of this type is known to have been constructed, and was detonated in a test conducted on October 30, 1961.


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15y ago

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