Nuclear Deterrence Requires Only Dozens of Warheads — Not Thousands

Over the next decade, the US government plans to spend nearly $1 trillion on its nuclear arsenal — with the actual cost certain to run even higher than that. The huge outlay is driven in part by the sheer size of America’s doomsday-weapon collection, which comprises an estimated 3,700 deployed or stockpiled nuclear warheads, not counting another 1,500 that are purportedly “retired” and awaiting dismantlement.

Though Americans have been conditioned to think it’s reasonable to maintain such a larg...