The 1969 Soviet embassy in London break-in occurred in 1969 when the Soviet embassy in London reported a break-in at its cryptology section after the embassy's cameras were destroyed and its supply of Revelade canisters was also eliminated. The break-in, highly classified, was apparently carried out with the goal of discovering more about extraterrestrial activities on Earth, as the embassy's archives on alien species were stolen.
According to declassified KGB files, the break-in was carried out by rogue KGB agent Natalya Ivanova, who sought to investigate her country's plots related to alien activity. She entered the embassy and stole the files, and the KGB reported that an alien-like being distracted them by killing several of them around the embassy. Ivanova was locked into the embassy when the automatic doors shut, so the alien destroyed the embassy's power grid, and Ivanova was able to escape with the documents. Shortly after, what was reported to be a UFO used its lasers to destroy the embassy complex and several British Army SAM missile launchers. Ivanova stole the documents, discovering that KGB broadcasts from their base in Tokyo tripled in the past month, discovered some cargo manifests, discovered that Project Solaris had hastened, and that the KGB had requisitioned 7 tons of uranium, 340 liters of human blood, and 92 cases of spam. Ivanova and the UFO proceeded to head to Tokyo separately to investigate the KGB operation there.