North Korea's leader is believed to be 33 years-old, which makes Kim Jong-un a millennial.
Donald Trump is 71, meaning he was born two full years before Kim's grandfather founded the Democratic People's Republic of Korea in 1948.
In addition to being "supreme leader," Kim is the living relic of a mostly bygone Communist era. His official title is chairman of the Workers' Party of Korea.
Trump, of course, is the president of the United States, a businessman and a reality television star.