Newly-elected Cardinal Leopoldo Jose Brenes Solorzano, Archbishop of Managua, right, is hugged by Pope Emeritus Benedict XVI during a consistory inside the St. Peter's Basilica at the Vatican, on Saturday. Alessandra Tarantino/AP hide caption

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Pope Benedict XVI, seen here in London in 2010, defrocked nearly 400 priests from 2011-2012 for abusing children, according to a document from the Holy See that was obtained by the AP. Peter Nicholls/AFP/Getty Images hide caption

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Pope Francis delivers a speech during a meeting with young people last month in Cagliari, Italy. Franco Origlia/Getty Images hide caption

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Pope Francis as he waved to the crowd in St. Peter's Square at the Vatican on Wednesday. Peter Macdiarmid/Getty Images hide caption

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Black smoke rose from the chimney on the Sistine Chapel at midday Wednesday in Vatican City. That means the cardinals have not yet chosen a new pope. Pool/Reuters /Landov hide caption

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As the black smoke rose from the Vatican chimney Tuesday, some of the nuns and others gathered in St. Peter's Square were singing. Eric Gaillard /Reuters /Landov hide caption

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Cardinals gathered in Vatican City on Monday, a day before the papal selection process known as the conclave begins. Jeff J Mitchell/Getty Images hide caption

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Roman Catholic cardinals have been meeting at the Vatican to get to know each other better and to set a date for the start of the conclave that will choose the next pope. On Thursday, this cardinal was walking to one of those meetings. Vincenzo Pinto /AFP/Getty Images hide caption

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In Vatican City's St. Peter's Square on Wednesday, a man looked at the Italian magazine Chi's photo of former Pope Benedicxt XVI — the first such image since he stepped down last week. Alberto Pizzoli/AFP/Getty Images hide caption

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That's not a real bishop on the left: A man later identified as Ralph Napierski of Germany (at left) posed with Cardinal Sergio Sebiastiana and others on Monday at the Vatican. Napierski was an imposter. He was later escorted from the area by Swiss Guards. Vincenzo Pinto /AFP/Getty Images hide caption

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Roman Catholic cardinals at the Vatican on Thursday, as Pope Benedict XVI bid them goodbye. Now they must turn to choosing his successor. Osservatore Romano /Reuters /Landov hide caption

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A final blessing: Pope Benedict XVI as he blessed those gathered outside his summer residence in Castel Gandolfo on Thursday. He's not expected to make any more public appearances. Tony Gentile /Reuters /Landov hide caption

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Pope Benedict XVI as he arrived on the altar in St. Peter's Square Wednesday for his last general audience. Gabriel Bouys /AFP/Getty Images hide caption

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Then-Cardinal Keith O'Brien, archbishop of Saint Andrews and Edinburgh, at St. Peter's Basilica in Vatican City last week. Franco Origlia/Getty Images hide caption

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Pope Benedict XVI delivers his blessing Sunday during his last Angelus noon prayer, from the window of his studio overlooking St. Peter's Square at the Vatican. Domenico Stinellis/AP hide caption

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