Why the U.S. Navy is navigating the South China Sea

What do recent U.S. naval forays in the South China Sea -- including Defense Secretary Ashton Carter’s visit aboard an aircraft carrier -- mean for tensions with China over the disputed waters? Hari Sreenivasan speaks to Bonnie Glaser of the Center for Strategic and International Studies.

View the Full Story/Transcript: http://www.pbs.org/newshour/bb/u-s-na...