FILE PHOTO: U.S. economist Jeffrey Sachs speaks during an interview with Reuters in Rome, Italy, March 15, 2016. Picture taken March 15, 2016. REUTERS/Max Rossi/File Photo
FILE PHOTO: U.S. economist Jeffrey Sachs speaks during an interview with Reuters in Rome, Italy, March 15, 2016. Picture taken March 15, 2016. REUTERS/Max Rossi/File Photo