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European Commission President Jean-Claude Juncker attends the Third Summit of "Three Seas Initiative" in Bucharest, Romania, Sept. 18, 2018. (Xinhua/Cristian Cristel)

European Commission President Jean-Claude Juncker attends the Third Summit of "Three Seas Initiative" in Bucharest, Romania, Sept. 18, 2018. (Xinhua/Cristian Cristel)