The top U.S. official on North Korea has accused a senior North Korean nuclear negotiator of being “locked in an old way of thinking."
U.S. Deputy Secretary of State Stephen Biegun issued the criticism in a statement Wednesday during a visit to Seoul.
Biegun referred to the North's vice foreign minister, Choe Son Hui, who recently said North Korea won't resume talks with the U.S. citing its hostile policy on the North.
It was rare for a senior U.S. official to directly criticize North Korea since the two countries began nuclear diplomacy in 2018.
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