BTW - what the heck was a "Cobalt Bomb" supposed to be in On The Beach?
I'm relying on memory (sometimes faulty), but if I remember, the On The Beach movie opens up with a brief description of 'what happened.' And then the movie plays out in the time afterward. So if there is a mention of Cobalt Bombs it would probably be in the earlier moments of the movie. I think the storyline has it that the Northern Hemisphere is already poisoned and the radioactivity is slowly circulating southward towards Australia or New Zealand (can't remember which).
The "cobalt bomb" was supposedly designed for long term radiation effects. As the Wiki link shows, they never built any. It was a theoretical design. But I can see now that the movie played on the fears of it. "Alas Babylon" played on the fears of the H-Bomb. The timelines of the movies/books suggest that Hollywood keeps up with the latest threats.
Soviet propaganda went into high gear against the neutron bomb also. And for good reason. But there was always the question of whether it would matter. Each side would view a nuke as a nuke, regardless of the effects. And the first use would open 'pandora's box.'
Its interesting that the idea of 'fail safe' goes into reverse once the war starts. Once it starts, or is about to start, all the safeguards to prevent it come off, and (in the military mindset) it is 'use it or lose it.' "The Day After" movie made some effort to portray that sort of 'war inertia,' with each side escalating, while still talking of ending hostilities.
I wonder if that has changed in recent years. When the earth was divided into two camps, everybody was on one side or the other. It seemed like the prevailing notion was that once nukes were used, it would inevitably escalate. Now they more openly talk of a first use w/o the expected escalation. Maybe they are just fooling themselves.
On another note, the idea of 'nuclear winter' became the expected after effect of a nuclear war sometime in the late 70s or early 80s. Movies made since then seem to feature that, rather than the idea of radiation overdose as in On The Beach.
And since were talking of apocalyptic Books/Films, the book "Triumph" was another one that featured enhanced radiation weapons, used with the idea of poisoning the 'enemy.'