On GPS Sunday, Fareed talks to Bill Browder -- once the largest foreign investor in Russia but now is on a Russian blacklist -- about what drives President Vladimir Putin. And, as the Greek debt deals come down to the wire, Fareed asks three leading economic thinkers to make sense of Greece's stand-off with the Eurozone. Then, a new report says that freedom is in decline globally -- what in the world? Finally, Bill and Melinda Gates tell Fareed why they are optimistic for the future, and what both women and technological innovation have to do with it.