Former French Economy Minister and candidate for the left-wing primaries ahead of the 2017 presidential election Arnaud Montebourg leaves a press conference, next to Montebourg's spokesperson Francois Kalfon (L), in front of a factory of the French multinational trainmaker Alstom on September 14, 2016, in Belfort, eastern France. France's Socialist government clashed with trainmaker Alstom on September 13, 2016 over the company's plans to close a historic plant, throwing into focus the state's policy of intervening to shore up a shrinking manufacturing base. / AFP PHOTO / SEBASTIEN BOZONSEBASTIEN BOZON/AFP/Getty Images