North Korea's failed missile test draws dueling rhetoric

In a visit to the South Korea, Mike Pence vowed action to achieve a nuclear-free peninsula More

Vice President Mike Pence in a visit to the DMZ and South Korean capital vowed action to achieve a nuclear-free peninsula, saying the U.S. and its allies will act unless China uses its influence to rein in North Korea. Meanwhile, a North Korean ambassador took a defiant tone at the United Nations. Chief foreign affairs correspondent Margaret Warner reports.

AIR DATE 4/17/17