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Well, the electromagnetic pulse generated by a high yield nuclear explosion inside the ionosphere will effectively destroy all modern electronics within a radius of several thousand miles around the point of detonation. However it will NOT destroy or even damage a single city in that area (except for any modern electronics it contains).

It might seem odd however that any old vacuum tube electronics will not be damaged, although they will briefly cease operating then instantly recover after the pulse passes.

To destroy cities the nuclear explosion must happen NEAR them.

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∙ 8y ago
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