A mysterious radioactive cloud that passed over 28 European countries recently was first detected over Italy. France’s radioprotection institute has now detailed its findings, saying the origins of the cloud came from ‘somewhere in South Russia’. The area in question has nuclear facilities, including one that converted nuclear fuel into weapons during the Cold War. Even after the location was identified, it is unclear how the radioactive cloud appeared, as there was no apparent accident at any of the nuclear facilities and it was not an ‘authorised release’. Meanwhile, on 16 November, Russia and the USA failed to resolve a dispute over extending the mandate of a UN-backed investigative team which blamed Syrian forces for a chemical weapons attack in April that killed over 80 people. See