Pope Francis (C) arrives to preside over an open-air mass on May 25, 2014 at the Manger Square outside the Church of the Nativity in the West Bank Biblical town of Bethlehem. Pope Francis urged an end to the "increasingly unacceptable" Israeli-Palestinian conflict, calling on leaders to show "courage" to achieve a peace based on a two-state solution. In the background is a giant painting featuring Jesus' birth with former Popes (LtoR) Paul VI, Jean-Paul II, and Benedict XVI. AFP PHOTO / VINCENZO PINTO