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PBS News Hour
Mattis talks diplomacy, deterrence at Korean border
On an unannounced visit to the heavily fortified demilitarized zone between North and South Korea, Defense Secretary Jim Mattis reaffirmed the U.S. alliance with the South in the face of increasing provocations from the North, while declaring a commitment to diplomacy and denuclearization of the peninsula. John Yang reports on the administration's efforts to increase pressure on North Korea.
