This documentary about the looming threat of all out nuclear war runs about 45 minutes too long, which means it would have made a disturbing, impactful, and very very good hour long TV special. As a feature length film, however, it wears out its welcome.
In a nutshell, the film argues that building a nuclear bomb is relatively easy, although it doesn`t tell us how to do that - for obvious reasons. What is needed is a lot of uranium or plutonium, a substance that is rather difficult to obtain. Investigating further, the film reveals that much uranium has nevertheless fallen into the wrong hands, and several nations have been able to obtain nuclear weapons, either by stealing them, finding missing nuclear warheads (yes, this has happened), or building them with obtained uranium. Frightening scenes emerge in a particular sequence that describes just what would happen if a nuclear bomb were to detonate in a major city. Not only that, several past instances are revealed where all out nuclear war was a minute`s decision away from occurring, many of these instances reminiscent of the Stanley Kubrick war film Dr. Strangelove.
Given the material that Countdown to Zero presents, this would have been a great 45 minute documentary that would have had me worried for the future, and anxious to make a difference. But the film is actually twice that length, and instead left me confused, wondering how much of the movie was made out of sheer concern for the survival of our species, and how much of it was incessant fear mongering.