Threats of bombs arrived in at least five German cities during the night of Friday/Saturday, according to German police. The threats reached health administration offices in two states— North Rhine-Westphalia, Bavaria, and Bremen— raising assumptions that there were links between these calls.
Russian theoretical physicist Yevgeny Avronin kept notes that were released pertaining his lifelong work in nuclear weapons. Avronin was a theoretical physicist, nuclear engineer and Scientific Director at the Russian Federal Nuclear Centre (RFNC). He was a co-developer of the RDS-37, the first Soviet two-stage thermonuclear bomb. He died in 2018.