Sanctions have failed to prevent North Korea from developing nuclear warheads for missiles.
A key North Korean official told the Trump administration to adjust its goals for diplomacy to succeed.
The breakdown in U.S.-North Korean diplomacy worsens.
North Korea has demolished a liaison office used to communicate with the South.
South Korea’s president said there is “trust and will for dialogue,” but it appears no talks are scheduled.
Executive director Daryl Kimball describes recent discussions by senior Trump administration officials to resume U.S. nuclear weapons testing and the effect such would have on global security and arms control.
North Korea has continued to test new missile systems and develop other new weapons as the United States aims to press sanctions.
Pyongyang tests short-range missiles in military exercises.
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A North Korean leadership shake-up may indicate a harder line on nuclear talks with the United States.
North Korea will no longer bide earlier unilateral commitments to refrain from nuclear and long-range missile testing.
The three nations have been engaged in discussions while U.S.-North Korean diplomacy gains larger headlines.