How much do we really know about North Korea? They were told it was the greatest nation on earth. But they could see for themselves the poverty, the power black-outs and the mysterious 'disappearances’ of friends and relatives. This week on Insight, defectors join Jenny Brockie in the studio to help paint a picture of life in North Korea. They’re joined by some of the world’s best brains and analysts who will try to piece together what’s unfolding in the secretive state in the aftermath of recent posturing and fist shaking by leader Kim Jong-un. Is North Korea a real threat? Or is it just a lot of hot air? The price of a miscalculation could be high.