Last week, the Islamic State’s ignorance of the role of demography in their local success may have led them to overplay their hand. Seeking to dissuade Jordanians from following their government in actively supporting the alliance arrayed against them, they executed a captured Jordanian pilot in horrendous fashion, burning him alive. Yet Jordan is not like Syria or Iraq, where violence against westerners or Shi’a or other minorities has helped split people from their allegiance to the government. Instead, this act of violence seems to have unified Jordan’s Sunnis against the Islamic State for their actions against a fellow Sunni Muslim. Jordan has expanded its assault, striking dozens of targets in Iraq for the first time.