Nuclear apocalypse was postponed in 1968. Now it’s back on the agenda | Simon Tisdall

As the world remembers Hiroshima, it must also recommit to the increasingly fragile non-proliferation treaty. The alternative is unthinkable

A crucial event for the future of international peace and security - and global sanity - got under way at UN headquarters in New York last week, though, given the lack of political and media attention, you might be forgiven for not noticing.

The review conference of the landmark 1968 Nuclear Non-Proliferation treaty (NPT) involves 191 state party signatories. Few international agreements enjoy such near universal support. Nuclear-armed Israel, India, Pakistan and North Korea are shameful hold-outs.