MELBOURNE — People sometimes forget that the boy who cried wolf ended up being eaten. True, nobody has been killed by a nuclear weapon since the attacks on Hiroshima and Nagasaki, 65 years ago this month.
And, with Cold War tensions long past, it is all too easy for policymakers and publics to resist the doomsayers, be complacent about the threats that these weapons continue to pose, and to regard attempts to eliminate them, or contain their spread, as well-meaning but futile.
But the truth is that it is sheer luck — not statesmanship or anything inherently stable about the world's nuclear weapon systems — that has let us survive so long without catastrophe. With 23,000 nuclear weapons (equivalent to 150,000 Hiroshimas) still in existence, more than 7,000 of them actively deployed, and more than 2,000 still on dangerously high launch-on-warning alert, we cannot assume that our luck will hold indefinitely.
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