The authoritative guide to ensuring science and technology make life on Earth better, not worse.

strategic arms control talks

The US and China re-engage on arms control. What may come next

By Daryl G. Kimball | Nuclear Weapons

US Deputy Secretary of State Wendy Sherman and Russian deputy Foreign Minister Sergei Ryabkov pose for pictures as they attend security talks on soaring tensions over Ukraine at the US permanent Mission, in Geneva, on January 10. "The conversation was difficult, it couldn't have been easy," Ryabkov was quoted as saying by the Interfax news agency after meeting Sherman during a working dinner in Geneva. (Photo by DENIS BALIBOUSE/POOL/AFP via Getty Images)

Putin’s demand for security guarantees: Not new and not to be taken literally, but not to be ignored

By Andrey A. Baklitskiy | Analysis, Nuclear Risk