Omanis hold a placard bearing a portrait of their leader Sultan Qaboos bin Said, who flew home the previous day after he spent more than eight months in Germany for medical treatment, during celebrations in the capital Muscat on March 24, 2015. Qaboos, is the longest serving leader in the Middle East and the only one many Omanis have ever had. AFP PHOTO / MOHAMMED MAHJOUB (Photo by MOHAMMED MAHJOUB / AFP)        (Photo credit should read MOHAMMED MAHJOUB/AFP/Getty Images)