WASHINGTON — This month, the Treaty on the Prohibition of Nuclear Weapons will open for signature at the United Nations. Signatories will promise never to “develop, test, produce, manufacture . . . possess or stockpile nuclear weapons’; never to transfer weapons to other parties nor to receive them; and never to “use or threaten to use nuclear weapons.” The treaty’s aims, if they could be universally effected, are noble. After all, the prospect of nations — including, now, an international pariah like North Korea — facing off with their respective nuclear arsenals is horrific. Their renewed use in war would […]