On Sunday, Kim Yo Jong — the powerful sister of North Korean leader Kim Jong Un — sharply dismissed the U.S. push for denuclearization as an “anachronistic dream.” She asserted that Washington’s efforts to “backbite” North Korea’s status hold zero legally binding force.

Declaring that Pyongyang will steadily expand its nuclear arsenal in the face of U.S.-led threats, she flatly rejected Washington’s insistence that President Donald Trump and Chinese President Xi Jinping had confirmed a shared goal of denuclearization during their recent Beijing summit.