Cambodia&#39;s Prime Minister Hun Sen, center, gestures during a ceremony inaugurating the country&#39;s longest bridge in Neak Loeung, southeast of Phnom Penh, Cambodia, Wednesday, Jan. 14, 2015. Hun Sen, Cambodia&#39;s tough and wily prime minister, marks 30 years in power Wednesday, one of only a handful of political strongmen worldwide who have managed to cling to their posts for three decades. (AP Photo/Heng Sinith)