There are many paths to a world free of nuclear weapons. What matters is that all States act now, without delay, to fulfil their disarmament and non-proliferation commitments.

建立无核世界固然有很多路径。但重要的是，所有国家都应迅速行动起来，履行裁军和不扩散承诺。

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The Secretary-General is gravely concerned about the negative impact of this deeply destabilizing act on regional stability as well as the global efforts for nuclear non-proliferation.

CNN: World leaders react to North Korea's nuclear test