One direct byproduct of the rapid advancement of militants from the Islamic State of Iraq and the Levant (ISIL) in Iraq is a revamped U.S. policy in Syria. Last week, President Obama asked Congress to authorize $500 billion in direct assistance to train and equip what it calls "appropriately vetted elements of the moderate Syrian armed opposition." That's a dramatic turnaround for Obama, who has tried to keep his distance from the civil war in Syria, which has become...