NKorea to strengthen nuclear deterrent

North Korea vowed Friday to strengthen its nuclear deterrent because of what it called Washington's continuing hostile policy, as a US envoy toured the region to try to restart disarmament talks.

"The study of the policy pursued by the Obama administration for the past 100 days since its emergence made it clear that the US hostile policy toward the DPRK (North Korea) remains unchanged," a foreign ministry spokesman said.


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