Tunisian police stand guard at the site the day after a bomb attack on a bus which was transporting Tunisia's presidential guards in central Tunis on November 25, 2015. Tunisia's President Beji Caid Essebsi declared a nationwide state of emergency and a curfew in the capital after a bomb attack on the presidential guard bus killed at least 12 people. AFP PHOTO / FETHI BELAID / AFP / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images)
