In this Oct. 10, 2015, file photo, North Korean leader Kim Jong Un waves at a parade in Pyongyang, North Korea. Itâs a single image released by an enormous propaganda apparatus, showing a note handwritten by a dictator. And it contains a telling clue to the mindset behind what has become the biggest story in Asia: North Koreaâs surprise and disputed claim to have tested its first hydrogen bomb. The Dec. 15, 2015, note from leader Kim Jong Un calls for a New Year marked by the âstunning sound of the explosion of our countryâs first hydrogen bomb.â (AP Photo/Wong Maye-E, File)