a retooling of north korea's image from that of a cold war era hermit kingdom to a modern, vigorous country with younger leadership. part of that effort involves kim promoting his younger sister. putting her front and center at international events such as the winter olympics. cameras are allowed to capture kim at pop star concerts with his glamorous wife. >> he's trying to show his audience he's the young leader, dynamic, he's in touch with pop culture. >> reporter: experts believe they are part of the plan to keep younger north koreans in line with the regime. >> he wants to get the kids hooked on drones, on devices, on technology, on cell phones. he dangles them as enticement for what their future may hold,