A restaurant worker stands by a board with foreign currency exchange rates outside a currency exchange shop in Istanbul, Monday, Aug. 13, 2018. Turkey's central bank announced a series of measures on Monday to free up cash for banks as the country grapples with a currency crisis. The Turkish lira has nosedived over the past week and tumbled another 7 percent on Monday as the central bank's measures failed to restore investor confidence. (AP Photo/Lefteris Pitarakis)