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New US ambassador to Japan Caroline Kennedy (C) is welcomed by school children upon her arrival at Mangokuura Elememtary School in the huge tsunami-hit area of Ishinomaki, Miyagi Prefecture, on November 25, 2013. Kennedy, the lone surviving child of the assassinated John F. Kennedy, met Japan's Emperor Akihito on November 19 in a ceremonial formality, which came days before the 50th anniversary on November 22nd of her father John F. Kennedy's assassination. AFP PHOTO/Toru YAMANAKATORU YAMANAKA/AFP/Getty Images
New US ambassador to Japan Caroline Kennedy (C) is welcomed by school children upon her arrival at Mangokuura Elememtary School in the huge tsunami-hit area of Ishinomaki, Miyagi Prefecture, on November 25, 2013. Kennedy, the lone surviving child of the assassinated John F. Kennedy, met Japan's Emperor Akihito on November 19 in a ceremonial formality, which came days before the 50th anniversary on November 22nd of her father John F. Kennedy's assassination. AFP PHOTO/Toru YAMANAKATORU YAMANAKA/AFP/Getty Images

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    Caroline Kennedy tours disaster zone

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Caroline Kennedy tours disaster zone

New U.S. Ambassador to Japan, Caroline Kennedy, tours the area destroyed by tsunami in 2011. CNN's Karl Penhaul reports.

Caroline Kennedy tours disaster zone

New U.S. Ambassador to Japan, Caroline Kennedy, tours the area destroyed by tsunami in 2011. CNN's Karl Penhaul reports.