What's more is that US intelligence knew there was to be an imminent attack on Moscow: "The United States collected intelligence in March that Islamic State-Khorasan, known as ISIS-K, the branch of the group based in Afghanistan, had been planning an attack on Moscow, according to officials. ISIS members have been active in Russia, one U.S. official said," according to more from NYT.
The Kremlin had earlier in the day demanded answers of Washington explaining why the US Embassy in Moscow issued an alert earlier this month for all US nationals to avoid public venues and be extra vigilant.
Of course, they knew. They organized and funded it.
