2013 The Most Powerful Couples of 2013 How to get from Pope Francis to Lady Gaga in 11 easy steps By Andrew Katz Dec. 09, 2013 prev3 of 13next Pablo Martinez Monsivais / APVLADIMIR PUTIN met BARACK OBAMA, U.S. President, shake hands outside the G-20 summit in St. Petersburg amid tension between the two leaders over NSA leaker Edward Snowden and potential military intervention in Syria. Share Read Later