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2017-02-21 16:29:04 UTC
the end of WW 2.
Also at the time the thermonuclear bomb, based on fusion, was not developed.
That must have been the end of the period when a nuclear war was winnable.
Currently there are around 14900 nuclear weapons in active state, and that is enough to destroy the world several times over.
During the Cold War the START (Strategic Arms Limitation Treaty) talks and NPT (Non Proliferation Treaty) were popular methods used to exercise control over nuclear arsenals.
Even today nuclear weapons, launchable as ICBM's and IRBM's, pose a grave threat to civilized society.
Is this a wake up call for the world that a nuclear war today is not winnable ?