August 18, 2015. President Vladimir Putin (second left), Prime Minister Dmitry Medvedev and Defense Minister and Chairman of the Russian Geographical Society Sergei Shoigu (second right) visit the first museum exposition in the building of the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin (right) and Prime Minister Dmitry Medvedev (center) during an excursion in the restored building of the Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. The restored building of the Konstantinovskaya casemated battery in the Bay of Sevastopol, which was visited by President Vladimir Putin and Prime Minister Dmitry Medvedev.

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August 18, 2015. President Vladimir Putin (center) and Prime Minister Dmitry Medvedev (second right) on the territory of the courtyard of the restored building of the Konstantinovskaya casemated battery in Sevastopol. Left in the background: Federation Council Speaker Valentina Matviyenko and Defense Minister and Chairman of the Russian Geographical Society Sergei Shoigu.

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August 18, 2015. President Vladimir Putin (right in the foreground), Federation Council Speaker Valentina Matviyenko and Defense Minister and Chairman of the Russian Geographical Society Sergei Shoigu (right in the background) on a viewing platform of the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin (foreground), Federation Council Speaker Valentina Matviyenko and Chief of Staff of the Presidential Executive Office Sergei Ivanov (background) visit the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin, Prime Minister Dmitry Medvedev and Federation Council Speaker Valentina Matviyenko (from right to left) visit the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin and Prime Minister Dmitry Medvedev (from right to left) in the building of the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin and Prime Minister Dmitry Medvedev (second and third right) visit the first museum exposition in the building of the restored Konstantinovskaya casemated battery in Sevastopol. From left to right: Federation Council Speaker Valentina Matviyenko, Defense Minister and Chairman of the Russian Geographical Society Sergei Shoigu and Chief of Staff of the Presidential Executive Office Sergei Ivanov.

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August 18, 2015. President Vladimir Putin visits the first museum exposition in the restored Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. President Vladimir Putin (right) and Prime Minister Dmitry Medvedev (left in the foreground) lay flowers to the monument to the defenders of the battery in the restored building of the Konstantinovskaya casemated battery in Sevastopol. From left to right in the background: Defense Minister and Chairman of the Russian Geographical Society Sergei Shoigu, Federation Council Speaker Valentina Matviyenko and Chief of Staff of the Presidential Executive Office Sergei Ivanov.

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August 18, 2015. President Vladimir Putin lays flowers to the monument to the defenders of the battery on the territory of the courtyard of the now restored building of the Konstantinovskaya casemated battery in Sevastopol.

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August 18, 2015. Russian President Vladimir Putin, right, after taking part in the underwater expedition to the Black Sea bottom near Sevastopol. The expedition is dedicated to the 170th anniversary of the Russian Geographical Society. Sergei Shoigu, left, president of the Russian Geographical Society, defense minister.

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August 18, 2015. President Vladimir Putin after taking part in the underwater expedition in Sevastopol as part of the program devoted to the 170th anniversary of the Russian Geographical Society (RGS).

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August 18, 2015. Defense Minister and Chairman of the Russian Geographical Society (RGS) Sergei Shoigu on Grafskaya Pier during President Vladimir Putin's conversation with journalists after his participation in the underwater expedition in Sevastopol.

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August 18, 2015. Defense Minister and Chairman of the Russian Geographical Society (RGS) Sergei Shoigu during President Vladimir Putin's conversation with journalists after his participation in the underwater expedition in Sevastopol.

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August 18, 2015. Descent into water of the Sea Explorer bathyscaphe in which President Vladimir Putin will submerge to a sunk ancient vessel on the Black Sea bottom near Sevastopol. He takes part in the expedition as part of the program devoted to the 170th anniversary of the Russian Geographical Society (RGS).

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August 18, 2015. Russian President Vladimir Putin, center, left, talks with journalists on Earl's Quay in Sevastopol after taking part in the underwater expedition dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin talks with journalists on Earl's Quay in Sevastopol after taking part in the underwater expedition dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin after taking part in the underwater expedition in Sevastopol dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin talks with Sevastopol residents after taking part in the underwater expedition on board a bathyscaphe dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, foreground, left, after taking part in the underwater expedition in Sevastopol dedicated to the 170th anniversary of the Russian Geographical Society. Sergei Shoigu, right, president of the Russian Geographical Society, defense minister.

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August 18, 2015. Russian President Vladimir Putin, center, after taking part in the underwater expedition dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin before submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. President Vladimir Putin after taking part in the underwater expedition in Sevastopol under the program devoted to the 170th anniversary of the Russian Geographical Society (RGS).

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August 18, 2015. President Vladimir Putin speaks with locals and journalists after taking part in the underwater expedition in Sevastopol as part of the program devoted to the 170th anniversary of the Russian Geographical Society (RGS).

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August 18, 2015. Russian President Vladimir Putin after submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin before submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin talks with residents and journalists after taking part in the underwater expedition on board a bathyscaphe in Sevastopol. The expedition is dedicated to the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, second right, talks with residents after taking part in the underwater expedition on board a bathyscaphe in Sevastopol. The expedition is dedicated to the 170th anniversary of the Russian Geographical Society. Sergei Shoigu, right, president of the Russian Geographical Society, defense minister.

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August 18, 2015. Russian President Vladimir Putin, center, after taking part in the underwater expedition in Sevastopol dedicated to the 170th anniversary of the Russian Geographical Society. Sergei Shoigu, foreground, left, president of the Russian Geographical Society, defense minister.

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August 18, 2015. Russian President Vladimir Putin, center, after submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, foreground, right, after his submerging on board a bathyscaphe near Sevastopol and Prime Minister Dmitry Medvedev seen in Sevastopol. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin after submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin talks with journalists after submerging 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, right, submerges 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, right, submerges 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, foreground, submerges 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, foreground, submerges 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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August 18, 2015. Russian President Vladimir Putin, right, submerges 83 meters under water on board a bathyscaphe near Sevastopol to see a sunken ancient vessel. The President took part in the expedition conducted as part of the celebration of the 170th anniversary of the Russian Geographical Society.

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