Turkish, U.S. forces launch major operation in Syria

Backed by U.S. forces, the Turkish military has launched a major operation inside Syria, sending warplanes and ground troops to retake territory held by the Islamic State. Vice President Joe Biden also called upon Kurdish rebels in the area to stop advances into Turkey, saying they would not receive U.S. support otherwise. Judy Woodruff speaks with the Atlantic Council’s Aaron Stein for more.