U.S. Secretary of Defense Ash Carter shakes hands with Vietnam's General Secretary Nguyen Phu Trong at the Presidential Palace in Hanoi, Vietnam, on June 1. Trong will meet with President Obama in the White House on Tuesday. Luong Thai Linh/EPA/Landov hide caption

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A March 16 satellite image from the CSIS Asia Maritime Transparency Initiative shows one of China's artificial islands in the South China Sea. CSIS Asia Maritime Transparency Initiative/DigitalGlobe hide caption

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'Great Wall Of Sand': China Builds Islands In Contested Waters

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Liu Jianchao (second right), China's assistant foreign minister, shakes hands with Japanese Deputy Foreign Minister Shinsuke Sugiyama (second left) during a meeting in Tokyo, Japan on Thursday. Liu Tan/Xinhua/Landov hide caption

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