Is U.S.-Turkey relationship weakened over Kurdish conflict?

Turkish officials say the air and ground campaign against U.S.-backed Kurdish forces in northwest Syria is a "national security issue" and an effort to protect the country's border, but the U.S. sees the Kurdish militia as a valuable partner in the fight against ISIS. Judy Woodruff talks with Serdar Kilic, Turkey’s ambassador to the U.S., for the Turkish perspective on the conflict in Syria.