The U.N. says North Korea is flouting U.N. sanctions by expanding its nuclear arsenal and ballistic missile program, and several nations reportedly believe the rogue country has developed miniaturized nuclear bombs that can fit its long-range intercontinental ballistic missiles.
South Korea issued a joint statement with the United States, which fought alongside it during the 1950-53 war triggered by a surprise North Korean invasion. The U.S. still stations about 28,500 soldiers in South Korea in what North Korea views as a military threat.
The North Korean warning came as relations between the two Koreas have been strained amid a prolonged deadlock in broader nuclear diplomacy between Pyongyang and Washington.
Amid rumors regarding Kim's health, his absence from certain events could have stemmed from steps taken recently in North Korea to limit a potential coronavirus outbreak, officials say.
Kim Jong Un’s health appears could be more serious than initially believed, according to multiple reports.