"Security Alert: The U.S. Embassy in Moscow is aware of a credible threat of a mass casualty event TODAY October 31, at the Tsaritsyno Museum Reserve in Moscow. The U.S. govt is coordinating with appropriate Russian authorities on a response." https://ru.usembassy.gov/security-alert-threat-to-tsaritysyno-museum-reserve-in-moscow-october-31-2026/