Pope Francis Pope Francis

Iranian President Hassan Rouhani opens a book he gave to Pope Francis as a gift at the Vatican on Tuesday. Rouhani is the first Iranian leader to meet with the pope since 1999. With sanctions against Iran falling away, Rouhani also announced business agreements with Italy as part of his visit to Europe. Andrew Medichini/AFP/Getty Images hide caption

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Andrew Medichini/AFP/Getty Images

Pope Francis caresses a baby at a charity in Rome on Friday. In keeping with his focus on the poor, he celebrated Mass at a soup kitchen at Rome's main train station. AP hide caption

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AP

Pope Francis Wraps Up A Big Year, Prepares For A 'Year Of Mercy'

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The closing ceremony of the Second Vatican Council in St. Peter Square on Dec. 9, 1965. Forty bishops pledged to forsake worldly goods, but the agreement was largely ignored. Pope Francis' emphasis on helping the poor has revived talk about the Pact of the Catacombs. Keystone-France/Gamma-Keystone via Getty Images hide caption

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Keystone-France/Gamma-Keystone via Getty Images

Pope Francis' Emphasis On Poverty Revives The 'Pact of The Catacombs'

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Journalists Emiliano Fittipaldi, left, and Gianluigi Nuzzi face criminal charges, along with three former Vatican officials. They're seen here at events publicizing their new books about financial dealings in the Catholic Church. AP hide caption

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AP

The balconies of St. Peter's at the Vatican in Rome. The two people arrested Monday were members of a committee convened by Pope Francis in 2013 to keep him abreast of financial reforms in the Vatican government. Giuseppe Ciccia/Barcroft Media /Landov hide caption

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Giuseppe Ciccia/Barcroft Media /Landov

Vatican spokesman Rev. Federico Lombardi (right) is denying claims in Italian newspapers that Pope Francis has a benign brain tumor. The rumors are part of an attempt to undermine the pope, the Vatican says. Andrew Medichini/AP hide caption

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Andrew Medichini/AP

Nuns of the Missionaries of Charity pray last month at the Mother House, the Missionaries' head office, in Kolkata, India. Dibyangshu Sarkar/AFP/Getty Images hide caption

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Dibyangshu Sarkar/AFP/Getty Images