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UN talks to ban nuclear weapons: what can they achieve?

What should the nuclear ban treaty include – and what difference does it make, if nuclear-armed governments refuse to join the talks?

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Ireland’s ambassador Patricia O’Brien at UN

Ireland’s ambassador, March 2017. Photo: R Johnson.

Although most nuclear-armed governments have made a point of publicly endorsing the goal of multilateral disarmament, they have large amounts of money and prestige invested in getting and keeping nuclear weapons.