WRIGHTWOOD, CA - AUGUST 17: A structure burns as flames sweep through a rural community at the Blue Cut Fire on August 17, 2016 near Wrightwood, California.. An unknown number of homes and businesses have burned and more than 80,000 people are under evacuation orders as the out-of-control wildfire spread beyond 30,000 acres and threatens to expand into the ski resort town of Wrightwood. (Photo by David McNew/Getty Images)

WRIGHTWOOD, CA - AUGUST 17: Flames close in on cars parked along a country road at the Blue Cut Fire on August 17, 2016 near Wrightwood, California. An unknown number of homes and businesses have burned and more than 80,000 people are under evacuation orders as the out-of-control wildfire spread beyond 30,000 acres and threatens to expand into the ski resort town of Wrightwood. (Photo by David McNew/Getty Images)

WRIGHTWOOD, CA - AUGUST 17: Flames sweep through a rural community at the Blue Cut Fire on August 17, 2016 near Wrightwood, California.. An unknown number of homes and businesses have burned and more than 80,000 people are under evacuation orders as the out-of-control wildfire spread beyond 30,000 acres and threatens to expand into the ski resort town of Wrightwood. (Photo by David McNew/Getty Images)

A handout picture taken and released by the Iranian Presidency on August 17, 2016 shows Iranian President Hassan Rouhani (R) speaking with Norway's Foreign Minister Borge Brende (L) during a meeting in Teheran. Iran said on August 17, 2016 that Norway had offered the Islamic republic a $1-billion credit line following a meeting between their foreign ministers in Tehran. Borge Brende and Mohammad Javad Zarif signed three "export credit" deals aimed at funding development and infrastructure projects", Iran's foreign ministry said in a statement. Iran has struggled to tap international finance as many banks fear US penalties if they do business with the Islamic republic. / AFP PHOTO / IRANIAN PRESIDENCY / - / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /Iranian Presidency" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS -/AFP/Getty Images

A handout picture taken and released by the Iranian Presidency on August 17, 2016 shows Iranian President Hassan Rouhani (R) shaking hands as he welcomes Norway's Foreign Minister Borge Brende (L) in Teheran. Iran said on August 17, 2016 that Norway had offered the Islamic republic a $1-billion credit line following a meeting between their foreign ministers in Tehran. Borge Brende and Mohammad Javad Zarif signed three "export credit" deals aimed at funding development and infrastructure projects", Iran's foreign ministry said in a statement. Iran has struggled to tap international finance as many banks fear US penalties if they do business with the Islamic republic. / AFP PHOTO / IRANIAN PRESIDENCY / - / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO /Iranian Presidency" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS -/AFP/Getty Images

RIO DE JANEIRO, BRAZIL - AUGUST 17: Informal drinks vendor Veronica talks to a man while waiting to sell drinks with a cooler outside the Olympic Boulevard during the Rio 2016 Olympic Games on August 17, 2016 in Rio de Janeiro, Brazil. She said she was not allowed to sell drinks on the boulevard but was able to get some business from tourists along the perimeter. (Photo by Mario Tama/Getty Images)

RIO DE JANEIRO, BRAZIL - AUGUST 17: Informal drinks vendor Veronica waits to sell drinks with a cooler outside the Olympic Boulevard during the Rio 2016 Olympic Games on August 17, 2016 in Rio de Janeiro, Brazil. She said she was not allowed to sell drinks on the boulevard but was able to get some business from tourists along the perimeter. (Photo by Mario Tama/Getty Images)

St. Louis Fed President James Bullard speaks about the U.S. economy during an interview in New York. REUTERS/Lucas Jackson