The World Food Programme has warned North Korea faces its worst food shortage since the 1990s famine, in which at least 1m people died and thousands fled to China in search of food. Those who were caught were sent back to North Korea for hard labour in the notorious prison camps. Kim Young-hee is one of the few people to have survived and escaped. After her release she fled straight back to China, where she remains in hiding today. Here she tells her story