Cairo, Muharram 29, 1437, Nov 11, 2015, SPA -- Egyptian President Abdel-Fattah Al-Sissi Wednesday vowed to enhance security in the country amid suspicions that a bomb caused the crash of a Russian passenger airliner in Sinai more than a week ago. "We will make more efforts in order to ensure security and safety for each visitor to Egypt," Al-Sissi said, according to the official Middle east News Agency. According to dpa, he called for Egyptians' unity at what he described as "this hard time." --SPA 19:41 LOCAL TIME 16:41 GMT www.spa.gov.sa/w