The White House was dragged kicking and screaming into the war against ISIS. Politically and materially, the Obama administration saw few upsides to engaging in the fight against the brutish Islamist militants despite their rapid advance across Syria and Iraq in the spring and early summer of last year. The administrationÂ’s hand was forced when it appeared as though ISIS was poised to drive the Yazidi minority into extinction. Even then, the White House only cautiously engaged in Iraq and utterly refused to take on the Islamic State in their Northern Syrian stronghold. Since then, the Islamic State has...