This should be on TV everytime a summit of warmongerers is happening. This is one hell of a realistic, and as a result one hell of a depressing, length of film with little hope and little light at the end of the tunnel. Did not age a bit.
Thorough, sequential and utterly devastating in its logical unpeeling of the inevitable consequences of nuclear fallout. No Hollywood humour or heroics here, just a steely-eyed focus on the horrors man does unto man.