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Chair Yellen delivers opening statement at the FOMC press conference, September 17, 2014 (Federal Reserve on Flickr)

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President Donald Trump speech at the monument to the heroes of the 1944 Warsaw Rising against the Nazis, July 6, 2017 (Krystian Dobuszynski/NurPhoto via Getty Images)

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Satellite dishes displayed in street of the city of Shiraz before being destroyed by the Iranian army, September 28, 2013 (MOHSEN TAVARO/AFP/Getty Images)

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World leaders and delegates attend the the second day of the G20 economic summit in Hamburg, Germany, July 8, 2017 (Thomas Lohnes/Getty Images)