Palestinian refugees are being starved, bombed and gunned down like animals. “If you want to feed your children, you need to take your funeral shroud with you,” one told Israeli news website Ynet. “There are snipers on every street, you are not safe anywhere.” This isn’t happening, however, in southern Lebanon, or even Gaza. And these particular Palestinians aren’t being killed or maimed by Israeli bombs and bullets. This is Yarmouk, a refugee camp on the edge of Damascus, just a few miles from the palace of Bashar al-Assad. Since 1 April, the camp has been overrun by Islamic State militants, who have begun a reign of terror: detentions, shootings, beheadings and the rest. Hundreds of refugees are believed to have been killed in what Ban Ki-moon has called the “deepest circle of hell”.