Avoid visiting the Tsaritsyno Museum Reserve in Moscow - US Embassy in the Russian Federation "The US Embassy in Moscow has become aware of a credible threat of an event that could result in mass casualties," the department said. She urged people to stay alert and avoid crowded places.

Avoid visiting the Tsaritsyno Museum Reserve in Moscow - US Embassy in the Russian Federation "The US Embassy in Moscow has become aware of a credible threat of an event that could result in mass casualties," the department said. She urged people to stay alert and avoid crowded places.