Kim Jong-un Born: North Korea's Nuclear Ruler

Kim Jong-un inherited the world's most isolated dictatorship from his father Kim Jong-il on December 17, 2011, at an age estimated to be 27 or 28 (his exact birthdate is not publicly confirmed, though January 8, 1983, or 1984 is most widely cited). He was the youngest head of state in the world and the third generation of the Kim dynasty to rule North Korea. Born in Pyongyang, he was educated in Switzerland under a pseudonym, attending a public school in Bern where classmates remembered him as a quiet, basketball-obsessed teenager. He returned to North Korea and was rapidly groomed for succession after his father's health declined following a stroke in 2008. His older brother Kim Jong-nam had fallen out of favor after being caught entering Japan on a forged passport in 2001, reportedly to visit Tokyo Disneyland. Kim Jong-un consolidated power through a series of purges that were extreme even by North Korean standards. He executed his uncle Jang Song-thaek in December 2013, reportedly by firing squad, after charging him with treason and "anti-party" activities. Jang had been the second most powerful man in the country. Kim's half-brother Jong-nam was assassinated at Kuala Lumpur airport in February 2017 by two women who smeared VX nerve agent on his face. Under his rule, North Korea accelerated its nuclear weapons program dramatically. The country conducted its most powerful nuclear test in September 2017, with an estimated yield of over 100 kilotons, and developed intercontinental ballistic missiles that demonstrated the theoretical capability to reach the continental United States. The program created a genuine nuclear crisis in 2017, with Trump threatening "fire and fury." His 2018 diplomatic meetings with South Korean President Moon Jae-in and U.S. President Donald Trump produced dramatic images but no lasting denuclearization agreement. The Hanoi summit in February 2019 collapsed without a deal. North Korea has continued missile testing. Kim's nuclear arsenal is estimated at 40 to 50 warheads. The country remains under comprehensive international sanctions.