Pope Francis' death exposes Gaza tensions in Israel-Vatican rift / Tensions surface between Israel, Vatican amid Pope Francis' death / As a diplomat, Pope Francis won breakthroughs and faced frustrations / Pope Francis bestowed a special nickname on AP's Vatican reporter for her often-tough questions / Pope Francis's many critics included a one-time aide and the Vatican's ex-ambassador to the US / In Argentina, debates over Pope Francis' legacy lead to one question: Why didn't he return? / 'A good man': Spain reacts to Pope Francis' death / Live updates: Pope Francis' death prompts mourning across the world, cause of death revealed