Sergio Mattarella, Italy's president, second left, stands with Hassan Rouhani, Iran's president, left, during a ceremonial welcome at the Quirinale Palace in Rome, Italy, on Monday, Jan. 25, 2016. The trip is Rouhani's first to the European Union since his election in 2013 on pledges to end sanctions and improve Iran's ties with the rest of the world. Photographer: Alessia Pierdomenico/Bloomberg via Getty Images
