Click to view a price quote on ^DJI. : U.S. stock futures fell on Monday, Aug. 13, and global stocks extended declines as Turkey's economic crisis escalated. The plunge in Turkey's lira - which fell 18% to a record low on Friday - lurched lower again overnight following weekend comments from President Recep Tayyip Erdoğan, who called the currency's decline a "plot" designed to weaken the government and the state.