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Portugal's President Marcelo Rebelo de Sousa (2L) welcomes Spain's king Felipe VI (L) and his wife queen Letizia after their arrival in Porto, on November 28, 2016 on the first day of their three days state visit to Portugal. / AFP / MIGUEL RIOPA (Photo credit should read MIGUEL RIOPA/AFP/Getty Images)

Portugal's President Marcelo Rebelo de Sousa (2L) welcomes Spain's king Felipe VI (L) and his wife queen Letizia after their arrival in Porto, on November 28, 2016 on the first day of their three days state visit to Portugal. / AFP / MIGUEL RIOPA        (Photo credit should read MIGUEL RIOPA/AFP/Getty Images)