Satellite imagery indicated Monday that North Korea had tested a rocket engine, and a senior Pyongyang official called Donald Trump a "heedless and erratic old man," resuming insults of the U.S. president that had been set aside during a thaw.
The statement carried in state media KCNA by Kim Yong Chol, a ruling party vice chairman who was instrumental in arranging a failed second summit in February, was the strongest salvo yet in a war of words that has rekindled in recent days.
He described Trump as impatient, rebuked him over his own rhetoric and repeated a threat from last week that Pyongyang would dust off its previous insult "dotard" for the U.S. leader.