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Italian President Sergio Mattarella (R) and Senate Speaker Maria Elisabetta Alberti Casellati attend the ceremony marking the Republic Day in Rome, Italy, on June 2, 2018. (Xinhua/Alberto Lingria)
 
 
Italian President Sergio Mattarella (R) and Senate Speaker Maria Elisabetta Alberti Casellati attend the ceremony marking the Republic Day in Rome, Italy, on June 2, 2018. (Xinhua/Alberto Lingria)