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Pope Francis talks with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano...

Pope Francis talks with Japan's Prince Akishino, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano Rellandini/Reuters Pool via...

Pope Francis talks with Japan's Prince Akishino and his wife Princess Kiko, during a meeting at the Vatican Thursday, May 12, 2016. (Stefano Rellandin...

Japan's Prince Akishino and his wife Princess Kiko arrive to attend a meeting with Pope Francis at the Vatican Thursday, May 12, 2016. (Stefano Rellan...

Pope Francis poses with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano...

Pope Francis poses with Japan's Prince Akishino during a private audience at the Vatican Thursday, May 12, 2016. (Stefano Rellandini/Reuters Pool via...

Pope Francis poses with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano...

Pope Francis talks with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano...

Pope Francis walks with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano...

Pope Francis exchanges gifts with Japan's Prince Akishino and his wife Princess Kiko, during a private audience at the Vatican Thursday, May 12, 2016....

Pope Francis exchanges gifts with Japan's Prince Akishino, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano Rellandini/Reuter...

Pope Francis talks with Japan's Prince Akishino, during a private audience at the Vatican Thursday, May 12, 2016. (Stefano Rellandini/Reuters Pool via...

Moroccan King Mohammed VI, left, and China's Premier Li Keqiang shake hands during a meeting at the Great Hall of People in Beijing, China, May 12, 20...

Moroccan King, Mohammed VI, third from left, talks with China's Premier Li Keqiang, right, during a meeting at the Great Hall of People in Beijing, Ch...

Moroccan King Mohammed VI, center, arrives at the Great Hall of People for a meeting with China's Premier Li Keqiang in Beijing, China, May 12, 2016....

Moroccan King Mohammed VI, second left, speaks during a meeting with China's Premier Li Keqiang at the Great Hall of People in Beijing, China, May 12,...

Britain's Prime Minister David Cameron sits beside U.S. Secretary of State John Kerry as they listen to a panel at the Anti-Corruption Summit in Londo...

Britain's Prime Minister David Cameron, left, and Nigeria President Muhammadu Buhari listen during a panel discussion at the Anti-Corruption Summit in...

Britain's Prime Minister David Cameron, left, sits beside U.S. Secretary of State John Kerry as they listen to a panel at the Anti-Corruption Summit i...

Christine Lagarde, Managing Director of the International Monetary Fund, speaks during a panel discussion at the Anti-Corruption Summit in London, Thu...

Britain's Prime Minister David Cameron, left, sits beside U.S. Secretary of State John Kerry as they listen to a panel at the Anti-Corruption Summit i...

Jose Ugaz, Transparency International, speaks during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron...

Britain's Prime Minister David Cameron points during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron...

Britain's Prime Minister David Cameron takes part in a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron...

Nigeria President Muhammadu Buhari listens during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron ha...

U.S. Secretary of State John Kerry listens during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron ha...

Britain's Prime Minister David Cameron gestures during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Camer...

U.S. Secretary of State John Kerry listens during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron ha...

World Bank President Jim Yong Kim speaks during a panel discussion at the Anti-Corruption Summit in London, Thursday, May 12, 2016. David Cameron has...

World Bank President Jim Yong Kim, from left, Sarah Chayes, U.S. Secretary of State John Kerry, Britain's Prime Minister David Cameron and Nigeria Pre...

World Bank President Jim Yong Kim, from left, Sarah Chayes, U.S. Secretary of State John Kerry, Britain's Prime Minister David Cameron and Nigeria Pre...

World Bank President Jim Yong Kim, from left, Sarah Chayes, U.S. Secretary of State John Kerry, Britain's Prime Minister David Cameron and Nigeria Pre...

Christine Lagarde, Managing Director of the International Monetary Fund, from left, Jose Ugaz, Transparency International, Daria Kaleniuk and Norway's...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, left, is welcomed by his Japanese counterpart Shinzo Abe upon his arrival at Abe's official r...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, left, is shown the way by his Japanese counterpart Shinzo Abe for his welcome ceremony upon a...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, left, and his Japanese counterpart Shinzo Abe pose for photographers prior to their meeting a...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, left, is urged to take a seat by his Japanese counterpart Shinzo Abe prior to their meeting a...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, third from left, accompanied by his Japanese counterpart Shinzo Abe, left, reviews a guard of...

Nigerian President Muhammadu Buhari speaks at the international anti-corruption summit on Thursday May 12, 2016 in London. British Prime Minister Davi...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, third from left, accompanied by his Japanese counterpart Shinzo Abe, second from left, review...

British Prime Minister Davis Cameron, centre, is joined by US Secretary of State John Kerry, left, and Nigerian President Muhammadu Buhari, as he spe...

British Prime Minister Cameron, right, followed by U.S. Secretary of State John Kerry arrive to open the international anti-corruption summit on Thur...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, third from left, accompanied by his Japanese counterpart Shinzo Abe, left, reviews a guard of...

British Prime Minister David Cameron listens during the international anti-corruption summit on Thursday May 12, 2016 in London. British Prime Ministe...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, left, speaks to his Japanese counterpart Shinzo Abe, third from right, during a meeting at Ab...

Nigerian President Muhammadu Buhari speaks at the international anti-corruption summit on Thursday May 12, 2016 in London. British Prime Minister Davi...

Kuwaiti Prime Minister Sheikh Jaber al-Mubarak al-Sabah, right, is led by his Japanese counterpart Shinzo Abe, to a meeting room at Abe's official res...

Nigerian President Muhammadu Buhari, right, listens as British Prime Minister Cameron at the international anti-corruption summit on Thursday May 12,...

Syrian children refugees sit outside their classroom to eat their snacks at a non-formal school, built by NGO Kayany Foundation, where only Syrian stu...

French President Francois Hollande delivers a speech after his visit at Prodways company headquarters in Les Mureaux, outside Paris, France, Thursday,...