He went on to note that the DPRK's efforts are aimed at self-defense and the country does not violate the norms of international relations, adding that its nuclear tests should not be criticized.
Ealier in the day, Choe Son Hui, the head of the North American department at North Korea's Foreign Ministry Pyongyang's nuclear arsenal is targeting exclusively the United States, as it is the only country, she said, which could attack North Korea.
The DPRK has been conducting missile launches and nuclear tests despite the international opposition and sanctions. Pyongyang has conducted six nuclear tests.
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