North Korea is continuing to develop its nuclear weapons program and several countries assess that it has "probably developed miniaturized nuclear devices to fit into the warheads of its ballistic missiles," according to a confidential UN report seen by Reuters on Monday.
The report by independent experts monitoring UN sanctions said that the countries, which they did not identify, believed North Korea's past six nuclear tests had likely helped it develop miniaturized nuclear devices. Pyongyang has not conducted a nuclear test since September 2017.
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The interim report was submitted to the 15-member UN Security Council North Korea sanctions committee on Monday.
North Korea is formally known as the Democratic People’s Republic of Korea (DPRK). North Korea’s mission to the United Nations in New York did not immediately respond to a request for comment on the U.N. report.
North Korean leader Kim Jong Un said last week there would be no more war as the country’s nuclear weapons guarantee its safety and future despite unabated outside pressure and military threats.
The UN report said one country, which it did not identify, assessed that North Korea “may seek to further develop miniaturisation in order to allow incorporation of technological improvements such as penetration aid packages or, potentially, to develop multiple warhead systems.”
North Korea has been subjected to UN sanctions since 2006 over its nuclear and ballistic missile programs. While the Security Council has steadily strengthened sanctions, UN monitors regularly report that North Korea’s continues to enhance its programs and violate sanctions.
North Korean leader Kim Jong Un and US President Donald Trump have met three times since 2018, but failed to make progress on US calls for Pyongyang to give up its nuclear weapons and North Korea’s demands for an end to sanctions.
In May 2018 North Korea followed through on a pledge to blow up tunnels at its main nuclear test site, Punggye-ri, which Pyongyang said was proof of its commitment to end nuclear testing. But they did not allow experts to witness the dismantlement of the site.
The UN report said that as only tunnel entrances were known to have been destroyed and there is no indication of a comprehensive demolition, one country had assessed that North Korea could rebuild and reinstall within three months the infrastructure needed to support a nuclear test.