From St. Petersburg to Crocus City Hall: How U.S. warnings of terrorist attacks in Russia have played out

On October 31, the U.S. Embassy in Moscow warned on its website of a possible terrorist attack at the Tsaritsyno museum and park complex. Russia’s Federal Security Service (FSB) confirmed that it had received a warning from the United States, after which the complex closed “for technical reasons.” No attack occurred. The following day, the FSB said it had detained a teenager who was the source of the information about a planned attack. This is not the first time the United States has shared information with Russian authorities about potential terrorist attacks in Russia. Here are three of the