This link shows the closing scene of Dr. Strangelove.  Why are atomic bomb blasts so fascinating to watch? Of course, the movie was a satire.

But when you see the next one, it becomes much more sobering.  It is a clip from a BBC documentary with CGI enhancement on Hiroshima. Part of the responsibility of having civilian control over military forces in the USA entails that at least some fraction of the civilian population retain a bit of knowledge of topics like this.

I think that when queried, most people will think of an atomic bomb blast as primarily a nuclear radiation calamity. To be sure, there is a healthy gamma pulse and the dispersal of a large variety of troublesome radionuclides, with long lasting contamination issues.  But much of the prompt destructive effect is from the immense heat pulse followed by the blast wave. 

Mutual assured destruction (MAD) as a nuclear strategy was arguably successful because parties on both the NATO and Soviet blocks were more desirous of long life than of the need for the delivery of nuclear hellfire at any cost.  The cold war was a time of opposing political and economic doctrines. MAD was essentially a secular concept.

In the present era of religious theatre, movements citing supernatural endorsement of earthly doctrines are in ascendancy.  The calculus of MAD fails when parties practice nuclear policy under the influence of supernatural euphoria.