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Nature 444, 660-661 (7 December 2006) | doi:10.1038/444660a; Published online 6 December 2006

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US backs revamp of nuclear warheads

Geoff Brumfiel1

  1. See Editorial, page 653.

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Weapons stockpile set for 'unnecessary' upgrade.

The US government is pushing ahead with a plan to overhaul its nuclear stockpile, despite a scientific review showing that existing warheads will last at least another half-century.On 1 December, the National Nuclear Security Administration — the agency that oversees the US nuclear stockpile — announced that it will pursue plans to develop a new Reliable Replacement Warhead (RRW), which it claims will be safer and more robust than current designs.