Paris attacks, Theology of Islamic State, Chief Rabbi on migrants in Greece

Following the worst terror attack in Europe for over a decade we hear from John Laurenson as he talks to people on the streets of Paris and hears from the faith communities about how they are trying to make sense of the horror on across the city on Friday night.

As flowers are laid outside French Embassies across the world, Trevor Barnes hears from members of the French community in London attending a mass at the Catholic Notre Dame du France Church and Christians and Muslims holding a vigil in Trafalar Square.

In accepting responsiblity for the Paris atrocities, the so-called Islamic State claimed the attacks were a reprisal for French air-strikes in Syria. William Crawley discusses to what extent religious belief and theology are a driving force behind this group with Dr Katherine Brown, an expert in political Islam at King's College London, Dr Sara Silvestri who teaches International Politics at St Edmund's College, Cambridge and Haras Rafiq, Managing Director of the Quilliam Foundation.

Also in the programme: the inter-governmental summit on climate change is a fortnight away and campaigners from around the globe have begun their journeys to Paris. Trevor Barnes was in Trafalgar Square as around 40 "pilgrims" set off to the French capital - on foot.

Catholic Bishops in England and Wales have said their secondary schools should teach Judaism rather than Islam as part of its GCSE curriculum. A former Ofsted R.E adviser, Alan Brine, and Philip Robinson, adviser to the Catholic Education Service discuss. Producers: Amanda Hancox Zaffar Iqbal.