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Romanian President Klaus Werner Iohannis (L, front) walks with French President Emmanuel Macron in Sibiu, Romania, on May 9, 2019. The leaders of the European Union (EU) member states on Thursday agreed on defending "one Europe" and upholding the rules-based international order in their "10 commitments" declaration, made at an informal summit in Sibiu, central Romania. (Xinhua/Chen Jin)