TOPSHOTS Tunisian forensic experts work inside the National Bardo Museum in Tunis on March 19, 2015, in the aftermath of an attack on foreign tourists at the museum. Tunisia's president promised to wage a "merciless war against terrorism" after gunmen killed at least 17 foreign tourists and two Tunisians in a daylight attack in the birthplace of the Arab Spring. AFP PHOTO / FETHI BELAID