Former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg delivers a speech during a meeting called "Assises du Produire en France" to promote the increased production of, and reliance on domestic produce in Reims, on September 9, 2016. / AFP PHOTO / François NASCIMBENIFRANCOIS NASCIMBENI/AFP/Getty Images

Former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg gestures as he delivers a speech during a meeting called "Assises du Produire en France" to promote the increased production of, and reliance on domestic produce in Reims, on September 9, 2016. / AFP PHOTO / François NASCIMBENIFRANCOIS NASCIMBENI/AFP/Getty Images

Former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg gestures as he delivers a speech during a meeting called "Assises du Produire en France" to promote the increased production of, and reliance on domestic produce in Reims, on September 9, 2016. / AFP PHOTO / François NASCIMBENIFRANCOIS NASCIMBENI/AFP/Getty Images

Former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg gestures as he delivers a speech during a meeting called "Assises du Produire en France" to promote the increased production of, and reliance on domestic produce in Reims, on September 9, 2016. / AFP PHOTO / François NASCIMBENIFRANCOIS NASCIMBENI/AFP/Getty Images

Former French Economy Minister and candidate for the left-wing primary ahead of the 2017 presidential election Arnaud Montebourg gestures as he delivers a speech during a meeting called "Assises du Produire en France" to promote the increased production of, and reliance on domestic produce in Reims, on September 9, 2016. / AFP PHOTO / François NASCIMBENIFRANCOIS NASCIMBENI/AFP/Getty Images

The Federal Reserve Bank of Boston's President and CEO Eric S. Rosengren speaks during the "Hyman P. Minsky Conference on the State of the U.S. and World Economies", in New York, April 17, 2013. REUTERS/Keith Bedford

French president Francois Hollande talks to media upon his arrival to the EU Med Mediterranean economies summit at Zappion Hall in Athens on September 9, 2016. With France's Francois Hollande and Italy's Matteo Renzi in attendance, the gathering comes less than two weeks after rescuers saved a one-day record of 6,500 migrants making the perilous journey across the Mediterranean to Europe. The four-hour conclave is also a chance to craft a common platform ahead of the major summit in Bratislava next month to chart the union's post-Brexit future. / AFP PHOTO / LOUISA GOULIAMAKILOUISA GOULIAMAKI/AFP/Getty Images

French president Francois Hollande arrives at the EU MED Mediterranean Economies summit in Athens on September 9, 2016. With France's Francois Hollande and Italy's Matteo Renzi in attendance, the gathering comes less than two weeks after rescuers saved a one-day record of 6,500 migrants making the perilous journey across the Mediterranean to Europe. The four-hour conclave is also a chance to craft a common platform ahead of the major summit in Bratislava next month to chart the union's post-Brexit future. / AFP PHOTO / LOUISA GOULIAMAKILOUISA GOULIAMAKI/AFP/Getty Images