The powerful sister of North Korean leader Kim Jong Un has dismissed the U.S.’s intent to resume diplomacy on North Korea’s denuclearization

Trump-Kim relations aren't dead, says high ranking official Kim Yo Jong — but if denuclearization is on the table, Pyongyang says don’t bother picking up the phone.

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.