Photo taken on March 29, 2017 shows an outdoor advertisement with image of President Recep Tayyip Erdogan, saying "For strong ruling, leading country, strong turkey, our decision is clear--say yes". Turkey will hold constitutional referendum on April 16, which will switch parliamentary system to presidential system. The reforms would hand wide-ranging executive powers to the president and the post of prime minister would be abolished. Recently, with argument on "Say Yes" or "Say no" to the constitutional amendment, Turkish main political parties start running advertisement in Ankara. (Xinhua/Qin Yanyang)
