A view of the tunnels of the PULSE underground laboratory, formerly known as the U1a complex, at the US Nevada National Security Site, which the authors visited in November 2023. The PULSE laboratory serves to conduct subcritical and physics experiments as part of NNSA's Stockpile Stewardship Program created to ensure the safety and reliability of the US nuclear weapons stockpile. (Credit: Image courtesy of the National Nuclear Security Administration)

New confidence-building measures can reduce tensions around subcritical tests

https://thebulletin.org/wp-content/uploads/2024/02/U1a-Tunnel-1400x776-1-150x150.jpg
https://thebulletin.org/wp-content/uploads/2024/02/U1a-Tunnel-1400x776-1-150x150.jpg

A view of the tunnels of the PULSE underground laboratory, formerly known as the U1a complex, at the US Nevada National Security Site, which the authors visited in November 2023. The PULSE laboratory serves to conduct subcritical and physics experiments as part of NNSA's Stockpile Stewardship Program created to ensure the safety and reliability of the US nuclear weapons stockpile. (Credit: Image courtesy of the National Nuclear Security Administration)

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