The top U.S. intelligence official is running out of options to bring peace to war-ravaged parts of the Middle East. “I don’t have an answer,” Director of National Intelligence James Clapper said in an interview with Washington Post columnist David Ignatius. “The U.S. can’t fix it. The fundamental issues they have — the large population bulge of disaffected young males, ungoverned spaces, economic challenges and the availability of weapons — won’t go away for a long time.” Even if armed forces are able to root out al Qaeda, the Islamic State in Iraq and Syria (ISIS) and other extremist groups...