We have a problem — not a problem from hell, but one that claims to come from heaven. That problem is sometimes called radical, or fundamentalist, Islam, and the self-styled Islamic State is just its latest iteration. But no one really understands it.
In the summer of 2014, Maj. Gen. Michael Nagata, the commander of U.S. special operations forces in the Middle East, admitted as much when talking about the Islamic State. “We do not understand the movement,” he said. “And until we do, we are not going to defeat it.”