Eleven days ago, Kurdish and American troops fought side by side against ISIS, as they have for the last five years in Syria. A week ago, the Kurds watched those same Americans flee the battlefield in a disorderly retreat as the Kurds’ sworn enemy, Turkey, invaded their territory. Today, the Kurds saw Vice President Mike Pence seal their military defeat in the name of a “temporary ceasefire.” Pence and Turkish President Recep Tayyip Erdogan reached the agreement Thursday in Ankara, carving out a 20-mile wide “safe zone” in Syria set to be “primarily enforced” by Turkish forces, according to a document released by both sides.