US 'will defend self and S Korea'

2 April 2013 Last updated at 17:05 ET

The US will defend itself and its "treaty ally" South Korea in the face of North Korean threats, Secretary of State John Kerry has said.

Mr Kerry made the pledge while speaking at a news conference with his South Korean counterpart Yun Byung-se.

Pyongyang has taken a series of defiant measures in the wake of its third nuclear test in February.

North Korea has been angered by the resultant UN sanctions and joint US-South Korea annual military drills.

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