North Korea yesterday carried out its most powerful nuclear test to date, claiming to have developed an advanced hydrogen bomb that could sit atop an intercontinental ballistic missile.
According to a statement issued by a UN spokesperson, the Secretary-General said that North Korea's action is yet another serious breach of the its international obligations and undermines international non-proliferation and disarmament efforts.
"This act is also profoundly destabilising for regional security. North Korea is the only country that continues to break the norm against nuclear test explosions," the statement said, using North Korea's official name Democratic People's Republic of Korea.
The head of the UN atomic agency has said that the nuclear test is "an extremely regrettable act".
"This new test, which follows the two tests last year and is the sixth since 2006, is in complete disregard of the repeated demands of the international community," said Yukiya Amano, Director General of the International Atomic Energy Agency (IAEA), in a statement.
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