North Korean leader Kim Jong-un guides a flight training of KPA Air and Anti-Air Force Unit 188, honored with the title of O Jung Hup-led Seventh Regiment on Monday, in this undated photo released by North Korea’s Korean Central News Agency, April 22, 2014.
When Kim Jong-un took power in December 2011, many experts saw his ascent as an opportunity for the West to transform the last bastion of hard-line communism, believing that the untested leader would shy away from confrontation with the U.S. and even South Korea.
Instead, North Korea’s leader — believed to be about 30 years old — has “proved to be more ruthless, aggressive and tactically skilled than anyone expected,” Peter Sanger of The New York Times reports.
Here are a few things North Korea’s supreme leader has done in the past 18 months to surprise and unnerve the U.S.:






















































