Supporters hold a placard that reads "happy birthday, leader" as they gather outside the residence of Turkey's President Recep Tayyip Erdogan to celebrate his birthday, in Istanbul, Sunday, Feb. 26, 2017. Turkey will hold a national referendum in April 16 on expanding Erdogan's powers. Critics say it would concentrate even more power in the hands of a leader they accuse of authoritarian behavior. The reforms would potentially allow Erdogan, 63, to remain in power until 2029.(Kayhan Ozer/Presidential Press Service, Pool Photo via AP)