A former US sergeant who defected to North Korea and became Pyongyang's prisoner for nearly 40 years has died. Charles Jenkins, 77, lived in Japan where he had settled with his family after release in 2004.<br/><br/>He was among four US soldiers who defected in the 1960s and later became North Korean film stars,but was the only one who was released.The others reportedly died in North Korea, including James Dresnok who was said to have died of a stroke in 2016.