EU and Turkey try to keep the migrants out

The EU is trying to persuade Turkey to stop migrants fleeing to Europe. Turkey is demanding a high price. But is there less to the deal than meets the eye? Also in this programme/podcast: What the Sharapova case tells us about the business of drugs and sport; why it's increasingly hard to build nuclear power stations in Western Europe; and the man whose thinking inspired much of the philosophy of the group which calls itself Islamic State.
Photo: A woman at a refugee camp in Greece, near the Macedonian border, on what used to be the route north.
Credit: Getty