Tourists take a "selfie" photograph on a smartphone against the backdrop of the Sultan Ahmet Mosque in the Fatih district of Istanbul, Turkey, on Saturday, Aug. 15, 2015. Turkeys central bank lowered the cost of dollar borrowing for a fourth time this year, seeking to halt the liras slide after the breakdown of talks on the formation of a new government sent financial markets tumbling. Photographer: Kerem Uzel/Bloomberg via Getty Images