Yemen was already the poorest country in the Middle East before the outbreak of war in 2014 between the Houthi rebels and government forces. Since then Yemen has experienced the largest outbreak of cholera in the modern world and is on the brink of the harshest famine the world has seen for decades. Over 20 million people (out of a population of 28 million) are in need of help. The fighting involves many groups of people and goes back many years. ...