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Technology

What's the point of nuclear weapons on instant alert?

By Debora Mackenzie

17 March 2010

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Nuclear missiles “on alert” could too easily be launched by mistake

IN THE next few weeks, President Barack Obama will publish his delayed Nuclear Posture Review (NPR), setting out the role nuclear weapons play in US defence. This is Obama’s opportunity to end one of the most dangerous legacies of the cold war: the nuclear missiles the US and Russia keep ready to fly in minutes. The signs are that he is unlikely to take it.

This leaves the questions why does the US keep its nuclear weapons “on alert”, and are they really needed?

The NPR is expected to…

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