“One standard must apply to all countries: zero.” Writing for Project Syndicate, Desmond Tutu challenges world leaders to commit to eliminating nuclear weapons once and for all.

In this article published The Guardian, Desmond Tutu points out that while sceptics may say that a nuclear-free world is an impossible dream, they said that about slavery and apartheid too.

In an open letter published in The Guardian, Gro Brundtland - alongside other senior European statesmen and women - has called for renewed urgency in tackling problems of nuclear proliferation.