news analysis For Vatican, a path back to diplomatic relevance ← Related Article Visit The Boston Globe Share on Twitter Share on Facebook Comment on this Scroll to top of page Franco Origlia/Getty Images Pope Francis hosted the Israeli and Palestinian presidents for a prayer summit at the Vatican Gardens on Sunday. Franco Origlia/Getty Images Israeli President Shimon Peres (left) and Palestinian President Mahmoud Abbas shook hands at the summit. Franco Origlia/Getty Images The pope styled the unique gathering as "exclusively religious," but also as an expression of hope for an end to one of the world's most protracted conflicts. Franco Origlia/Getty Images In his comments, the pope was direct: "Peacemaking calls for courage, much more so than warfare." MAX ROSSI/AFP/Getty Images The leaders also planted an olive tree. The pope said he hoped the symbolism would be "the beginning of a new journey."