Enrique Pena Nieto, Mexico's president, second from right, speaks with his wife Angelica Rivera, during an official welcoming ceremony for Felipe VI, King of Spain, second from left, and his wife Letizia Ortiz, Queen of Spain, left, in Mexico City, Mexico, on Monday, June 29, 2015. The event marked the first public appearance by Pena Nieto since undergoing gallbladder surgery on June 26. Photographer: Susana Gonzalez/Bloomberg via Getty Images
