Russian President Vladimir Putin and U.S. President Barack Obama reach to shake hands during arrivals for the G-20 summit at the Konstantin Palace in St. Petersburg, Russia on Thursday, Sept. 5, 2013.... more 
Russian President Vladimir Putin and U.S. President Barack Obama reach to shake hands during arrivals for the G-20 summit at the Konstantin Palace in St. Petersburg, Russia on Thursday, Sept. 5, 2013. The threat of missiles over the Mediterranean is weighing on world leaders meeting on the shores of the Baltic this week, and eclipsing economic battles that usually dominate when the G-20 world economies meet. (AP Photo/Dmitry Lovetsky) less 
1 / 28
Associated Press | Photo By Dmitry Lovetsky
Thu, Sep 5, 2013 11:40 AM EDT