Patriarch Kirill of Moscow and All Russia, center, receives an honorary doctoral degree (honoris causa) during his visit to the University of Belgrade.

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Patriarch Kirill of Moscow and All Russia, left, receives an honorary doctoral degree (honoris causa) during his visit to the University of Belgrade.

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From left: Patriarch Kirill of Moscow and All Russia, Serbian President Tomislav Nikolic and Patriarch Irinej of Serbia at the greeting ceremony in Belgrade, Serbia.

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Patriarch Kirill of Moscow and All Russia, left, and Serbian President Tomislav Nikolic at the greeting ceremony in Belgrade, Serbia.

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Patriarch Kirill of Moscow and All Russia, left, and Patriarch Irinej of Serbia during a visit to the University of Belgrade.

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Patriarch Kirill of Moscow and All Russia, foreground, leaves a memorial inscription in a book at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia, third left, during a ceremonial service at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia during a ceremonial service at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia during a ceremonial service at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia, center, and Patriarch Irinej of Serbia at the greeting ceremony at the Cathedral Church of St. Michael the Archangel in Belgrade, Serbia.

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Clergymen greet Patriarch Kirill of Moscow and All Russia at the Cathedral Church of St. Michael the Archangel in Belgrade.

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A man and a woman in national costumes and clergymen greet Patriarch Kirill of Moscow and All Russia at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia, left, and Patriarch Irinej of Serbia during a visit to the University of Belgrade.

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Patriarch Kirill of Moscow and All Russia, left, and Patriarch Irinej of Serbia during a visit to the University of Belgrade.

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Patriarch Kirill of Moscow and All Russia during a visit to the University of Belgrade.

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Patriarch Kirill of Moscow and All Russia during a ceremonial service at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Irinej of Serbia, second right, before a ceremonial service at the Cathedral Church of St. Michael the Archangel in Belgrade.

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Patriarch Kirill of Moscow and All Russia, center, during a welcoming ceremony at Belgrade's Nikola Tesla Airport.

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Patriarch Kirill of Moscow and All Russia, second right, during a welcoming ceremony at Belgrade's Nikola Tesla Airport.

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Alexander Chepurin, Russia's Extraordinary and Plenipotentiary Ambassador to Serbia, and Patriarch Irinej of Serbia, right, during a welcoming ceremony for Patriarch Kirill of Moscow and All Russia at Belgrade's Nikola Tesla Airport.

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Patriarch Kirill of Moscow and All Russia, left, and Patriarch Irinej of Serbia during a welcoming ceremony at Belgrade's Nikola Tesla Airport.

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Patriarch Kirill of Moscow and All Russia, left, and Patriarch Irinej of Serbia during a welcoming ceremony at Belgrade's Nikola Tesla Airport.

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A clergyman takes photos during a welcoming ceremony for Patriarch Kirill of Moscow and All Russia at Belgrade's Nikola Tesla Airport.

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Patriarch Kirill of Moscow and All Russia during a welcoming ceremony at Belgrade's Nikola Tesla Airport.

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