(From L to R) Greek Prime Minister Alexis Tsipras, Spanish Prime Minister Mariano Rajoy, French President Francois Hollande, Portugal's Prime Minister Antonio Costa, Cypriot President Nicos Anastasiades, Maltese Prime Minister Joseph Muscat and Italian Prime Minister Paolo Gentiloni pose for group photos during the Southern EU countries summit in Lisbon, Portugal, January 28, 2017. Southern European leaders called for a united EU to fight terrorism, boost growth and find a solution to the migrant crisis at the Southern EU countries summit in Lisbon on Saturday. (Xinhua/Zhang Liyun)