There are two key takeaways from the ISIS terrorist attack on a Russian concert hall near Moscow last Friday.

First, that the attack was brutal in both intent and form. It was another manifestation of ISIS’s particularly pernicious interpretation of Salafi-Jihadist ideology: the belief that innocent blood and gratuitous suffering are the purest pathways to God’s will. Why the terrorists allowed themselves to be caught by the Russians is unclear. But as in the various torture videos that the Russians are now releasing, the remainder of their lives are unlikely to be pleasant.