The Economist: In January 2007 Henry Kissinger, George Shultz, William Perry and Sam Nunn — two Republican secretaries of state, a Democratic defence secretary and a Democratic head of the Senate Armed Services Committee — called for a global effort to reduce reliance on nuclear weapons.

The ultimate goal, they wrote in the Wall Street Journal, should be to remove the threat such weapons pose completely.

The article generated an astonishing response. Long seen as drippily Utopian, the idea of getting rid of nuclear weapons was suddenly taken on by think-tankers, academics and all sorts of very serious people in the nuclear-policy business.

The next year a pressure group, Global Zero, was set up to campaign for complete nuclear disarmament. Its aims were endorsed by scores of government leaders, present and past, and hundreds of thousands of citizens.

In April 2009 Barack Obama, speaking in Prague, promised to put weapons reduction back on the table and, by dealing peacefully but firmly with Iran’s nuclear ambitions, to give new momentum to the nuclear Non-Proliferation Treaty (NPT). Processes could now be set in train, he said, that would lead to the worldwide renunciation of nuclear weapons within a generation. This speech, along with his ability not to be George W. Bush, was a key factor in landing Mr Obama the Nobel peace prize a few months later.

The following year he returned to Prague to sign an arms agreement with Russia, New START, which capped the number of deployed strategic warheads allowed to each side at 1,550. His co-signatory, Russia’s then president, Dmitry Medvedev, had endorsed Global Zero’s aims. A month later the NPT’s quinquennial review conference agreed a 64-point plan intended to reinforce the treaty’s three mutually supportive legs: the promise that all countries can share in the non-military benefits of nuclear technology; the agreement by non-weapons states not to become weapons states; and the commitment of the weapons states to pursue nuclear disarmament. There were hopes that, when the parties to the NPT met again in May 2015, there would be substantial progress to report.

Alas, no. Mr Obama’s agreement with Iran remains possible, even likely — but it will hardly be one that energises the cause of a nuclear-free world. [Continue reading…]