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As the EU Referendum campaigns get underway, Edward Stourton speaks to two Christians on opposite sides of the argument who are both taking to social media to garner support for their views. Adrian Hilton runs the influential Cranmer blog; Michael Sadgrove is the emeretus dean of Durham. A cross-party group of peers has written to the Prime Minister urging him to put pressure on the UN Security council to declare the assaults on Christians in Syria and the Middle East a Genocide. John Pontifex from "Aid to the Church in Need" tells Edward why the term is appropriate and the positive effects that the designation could have. The Church in Wales has parachuted an American religious leader in to the diocese of St Asaph to help its churches re-connect with their communities. Mark Yaconelli explains his approach to Edward. Paul Chambers, a sociologist of religion, explains why religion in Wales has declined more steeply than in the rest of the UK. Cardinal George Pell will be giving evidence to the Australian Royal Commission into Institutional Responses to Child Sexual Abuse from a video link in a Rome hotel room. A heart condition means he has been advised against travelling home to Australia to give evidence in person. Andrew West from ABC sets the scene for the hearing which begins on Sunday night/Monday. Producers: Rosie Dawson Carmel Lonergan Series Producer: Amanda Hancox photo by: Parker Fitzgerald for Uniqlo.