How far has the refugee crisis in Europe exposed inter-faith tensions? Most of those fleeing are Muslims and this has provoked concern in some quarters that the migrants won't adhere to European cultural values. Zeinab Badawi meets Anglican bishop Michael Nazir-Ali who was born in Pakistan and whose Muslim father converted to Christianity. Arguably this gives him a special role in the debate about morals and values within the context of the refugee crisis. But is he showing such leadership?