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China's Public Security Minister Guo Shengkun addresses the opening ceremony of a security cooperation dialogue on the Belt and Road Initiative, in Beijing, capital of China, May 4, 2017. (Xinhua/Ding Hiatao)

China's Public Security Minister Guo Shengkun addresses the opening ceremony of a security cooperation dialogue on the Belt and Road Initiative, in Beijing, capital of China, May 4, 2017. (Xinhua/Ding Hiatao)