'Dotard' rockets from obscurity to light up Trump-Kim exchange, spark partisan war of words

President Trump fired off “rocket man.”

North Korean dictator Kim Jong Un, the target of that verbal missile launch, shot back a flurry of taunts, calling America’s leader “a rogue,” “a frightened dog,” a “gangster fond of playing with fire.”

But it was one word that lit up social media, sent countless...