I haven't, it's going on the list. The plot sounds remarkably similar to By Dawn's Early Light (also good, from a psychological point of view).
Failsafe is based on the same novel that Dr. Strangelove was based on - but while the (imho vastly superior) Kubrick movie was a comedy, Failsafe is more a warning.
They weren't based on the same novel -- but the novels "Fail Safe" and "Red Alert" were similar enough, and the release dates of "Fail Safe" and "Dr. Strangelove" were so close that Peter George and Stanley Kubrick sued the author and production of Fail Safe over copyright. In the eventual settlement, Columbia Pictures bought and distributed Fail Safe.