USA warned Russia of an attack in Moscow. FSB detained a teenager

A teenage Russian was detained after posting threatening content on TikTok, including images in tactical gear and references to violence. The FSB linked him to a neo-Nazi Telegram channel and found searches related to terrorist attacks on his devices. Following a warning from the U.S. Embassy about a credible threat of a mass casualty attack at the Tsaritsyno Museum in Moscow, security measures were heightened, and the area was closed off. This incident echoes previous intelligence-sharing efforts by the U.S. before a deadly attack in Krasnogorsk in 2024, which Russian authorities reportedly ignored.