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A sophisticated device uses radio waves to determine whether states are really complying with nuclear weapons treaties

A complex configuration of metal mirrors is set up in a container to test how we
A complex configuration of metal mirrors is set up in a container to test how well movement of the blue barrel can be detected using radio wave monitoring. © RUB, Marquard

When it comes to nuclear weapons, no state really wants to leave anything to chance. A small movement in nuclear weapons stocks can have a major impact. It is therefore important to monitor nuclear weapons treaties effectively and closely. This is a real challenge in high-security facilities and it makes the proposed solution all the more creative.

An article that has now appeared in the scientific journal "Nature Communications" describes how State A can ensure that there are no changes in State B's nuclear weapons stockpile - and how this is possible without permanent on-site monitoring. ...

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