Kim Yo Jong has been described as a mouthpiece for her brother, North Korean leader Kim Jong Un — and a potential successor.

North Korea has ​doubled down on expanding its nuclear fleet and continued its criticism of the U.S., although it has refrained from personal attacks on Trump.

The powerful sister of North Korean leader Kim Jong Un dismissed the U.S.'s intent to resume diplomacy on North Korea’s denuclearization, as she urged Washington to accept her country as a nuclear weapons state and find a new approach to restart talks.