Kim Jong Un's Sister Warns Biden: 'Refrain From Causing a Stink' or Face Consequences

Kim Yo Jong, the influential sister of North Korean leader Kim Jong Un, delivered her country's opening message to the Biden administration on Tuesday with a stark warning: the United States should "refrain from causing a stink" if it wanted to "sleep in peace" over the next four years. The statement, published in Pyongyang's official Rodong Sinmun newspaper, marked North Korea's first direct communication with the new American government and arrived at a carefully chosen moment—as U.S. Secretary of State Antony Blinken and Defense Secretary Lloyd Austin touched down in Asia for talks with Japan and South Korea about regional security and nuclear diplomacy.

Kim Yo Jong, who serves as a senior official overseeing inter-Korean relations, framed her warning in language that mixed threat with negotiating posture. She accused the United States and South Korea of attempting to introduce "gun powder smell" into North Korean territory and said the North would be watching closely to see whether the new administration would take a different approach than its predecessor. The timing was deliberate: Blinken and Austin were scheduled to meet with Japanese officials in Tokyo that same day before traveling to Seoul on Wednesday, making clear that North Korea was inserting itself into the diplomatic choreography before those conversations could begin.

The substance of Kim Yo Jong's message went beyond rhetorical posturing. She signaled that North Korea was prepared to abandon or scrap several agreements and institutional arrangements if tensions continued to rise. The country threatened to discard the 2018 bilateral military agreement with South Korea—the most concrete achievement from three summits between Kim Jong Un and South Korean President Moon Jae-in—which had required both sides to establish buffer zones on land and sea and create no-fly zones to reduce conventional military threats. She also indicated that North Korea would consider abolishing a decades-old ruling party unit responsible for managing inter-Korean relations and would scrap an office that had coordinated South Korean tourist visits to Diamond Mountain, a scenic area in the North that Seoul had closed to visitors in 2008 after a North Korean guard shot and killed a South Korean tourist.

The immediate trigger for Kim Yo Jong's statement was the resumption of joint U.S.-South Korean military exercises, which had begun the previous week and were scheduled to continue through Thursday. These were downsized drills—computerized simulations and command post exercises rather than field training—conducted with consideration for pandemic conditions and ongoing diplomatic efforts to restart nuclear talks. South Korea's Defense Ministry characterized them as defensive in nature and called on the North to adopt a more constructive stance. Yet Kim Yo Jong dismissed even these scaled-back exercises as hostile acts incompatible with dialogue, repeating a familiar North Korean position that military drills and cooperation could not coexist.

The warning reflected the precarious position Kim Jong Un occupied as he entered his tenth year in power. His economy had deteriorated further under pandemic border closures, and his three summits with former President Donald Trump had failed to produce sanctions relief despite his willingness to engage in direct diplomacy. In recent political speeches, Kim had pledged to strengthen his nuclear weapons program while simultaneously suggesting that the trajectory of U.S.-North Korean relations depended on Washington's choices. A senior Biden administration official acknowledged on Saturday that American diplomats had attempted to contact North Korea through multiple channels since the previous month but had received no response, speaking on condition of anonymity because the outreach had not been publicly authorized.

Leif-Eric Easley, a professor of international studies at Ewha University in Seoul, interpreted Kim Yo Jong's statement as part of a broader North Korean strategy to exploit divisions between South Korea and its American ally. "This is Kim Yo Jong continuing to be the tip of the wedge North Korea tries to drive between South Korea and its U.S. ally," he said, adding that the threat meant the two allies had limited time to coordinate their positions on deterrence, sanctions, and engagement. The Biden administration's first Cabinet-level trip abroad was designed partly to reassure Asian allies after four years of the Trump administration's "America first" approach and to address the dual challenge of North Korea's nuclear arsenal and China's expanding regional influence.

What remained unclear was whether Kim Yo Jong's statement represented a hardening of North Korea's negotiating stance or an opening gambit designed to test the new administration's resolve. The message contained both elements: a threat to abandon agreements and a suggestion that North Korea's future conduct would depend on how the United States and South Korea behaved. As Blinken and Austin prepared their meetings in Tokyo and Seoul, they would be operating in the shadow of this warning, knowing that North Korea was watching to see whether the Biden administration would chart a different course than its predecessor or whether the pattern of military exercises, sanctions, and diplomatic stalemate would continue.