A picture shows a wreath and a placard at the entrance of the Bardo Museum on March 20, 2015 in Tunis, two days after gunmen attacked the museum. The Islamic State jihadist group has claimed responsibility for the attack on foreign tourists in Tunis, the deadliest since Tunisia's 2011 revolution, which sparked the Arab Spring regional uprisings. AFP PHOTO / FETHI BELAID (Photo credit should read FETHI BELAID/AFP/Getty Images)
