Pope backs Iran nuke deal, urges end to extremist violence

Tens of thousands gathered in St. Peter's Square for Easter Mass in a cold, pouring rain Sunday to hear Pope Francis call for an end to global violence and the persecution of Christians by extremist groups.

Francis also expressed support for the Iran nuclear deal reached in Lausanne, Switzerland, saying he hoped it would be "a definitive step toward a more secure and fraternal world."

Ominous grey clouds poured rain on crowds that started to gather hours before the pope's traditional Easter "Urbi et Orbi" -- Lat