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MADRID, SPAIN - DECEMBER 24: King Felipe VI of Spain arrives with Queen Letizia of Spain to deliver his first Christmas Eve message at the Zarzuela Palace in Madrid on December 24, 2014 in Madrid, Spain. King Felipe VI spoke out against corruption but made no direct reference to his sister, Cristina de Borbon, who has been ordered to stand trial for tax crimes. (Phoro by J. J. Guillén - Pool /Getty Images)

MADRID, SPAIN - DECEMBER 24:  King Felipe VI of Spain arrives with Queen Letizia of Spain to deliver his first Christmas Eve message at the Zarzuela Palace in Madrid on December 24, 2014 in Madrid, Spain.  King Felipe VI spoke out against corruption but made no direct reference to his sister, Cristina de Borbon, who has been ordered to stand trial for tax crimes.   (Phoro by J. J. Guillén - Pool /Getty Images)