Ukraine has been accused of being responsible for the terrorist attack in Moscow. Originally published on Telegram, the thesis was developed by Vladimir Putin and his close siloviki, the current and former head of the FSB, Alexander Bortnikov and Nikolai Patrushev, both ex-KGB, like Putin. The narrative rids the Russian authorities of all responsibility, plays well into the rhetoric about the Ukrainian-Western aggression and can be used to escalate the war. Arguments in its defense include falsehoods and an older conspiracy theory.