Vladimir Putin, Angela Merkel , David Cameron(01 of29)
Open Image ModalFrom the left: Germany's Chancellor Angela Merkel, Russian President Vladimir Putin and British Prime Minister David Cameron talk as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
Angela Merkel , David Cameron(02 of29)
Open Image ModalGermany's Chancellor Angela Merkel, center in front, and British Prime Minister David Cameron, front right, walk down the stairs as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
Herman Van Rompuy, Barack Obama, Manmohan Singh(03 of29)
Open Image ModalEuropean Union Council President Herman Van Rompuy, left, and U.S. President Barack Obama, center, talk as India's Prime Minister Manmohan Singh watches the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
David Cameron, Angela Merkel(04 of29)
Open Image ModalGermany's Chancellor Angela Merkel, center, and British Prime Minister David Cameron, right, arrive for a Water and Music Show during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Vladimir Putin(05 of29)
Open Image ModalRussia's President Vladimir Putin, center, arrives for a Water and Music Show during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Jose Manuel Barroso, Herman Van Rompuy, Barack Obama, Manmohan Singh(06 of29)
Open Image ModalFrom the left: European Union Commission President Jose Manuel Barroso, European Union Council President Herman Van Rompuy, U.S. President Barack Obama and India's Prime Minister Manmohan Singh watch the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
(07 of29)
Open Image ModalActors perform during a light and water show for the G-20 leaders at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
(08 of29)
Open Image ModalFireworks and a light and water show illuminate during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Vladimir Putin, Angela Merkel , David Cameron(09 of29)
Open Image ModalGermany's Chancellor Angela Merkel, left, looks at her cell phone as Russian President Vladimir Putin, center, drinks and British Prime Minister David Cameron looks on as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
(10 of29)
Open Image ModalFireworks and a light and water show illuminate during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
(11 of29)
Open Image ModalFireworks and a light and water show illuminate during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
(12 of29)
Open Image ModalFireworks and a light and water show illuminate during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Vladimir Putin, David Cameron(13 of29)
Open Image ModalRussian President Vladimir Putin and British Prime Minister David Cameron, right, warm themselves as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama(14 of29)
Open Image ModalU.S. President Barack Obama arrives for a Water and Music Show during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Vladimir Putin, Angela Merkel , David Cameron(15 of29)
Open Image ModalRussian President Vladimir Putin, second right, covers Germany's Chancellor Angela Merkel warm blanket as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 2013. British Prime Minister David Cameron is on the right. 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama(16 of29)
Open Image ModalU.S. President Barack Obama, center, arrives for a Water and Music Show during the G-20 summit at the Grand Palace in Peterhof, the czarist summer estate outside St. Petersburg, Russia, early Friday, Sept. 6, 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) (credit:AP)
Vladimir Putin, Angela Merkel , David Cameron(17 of29)
Open Image ModalRussian President Vladimir Putin, second right, covers Germany's Chancellor Angela Merkel warm blanket as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 2013. British Prime Minister David Cameron is on the right. 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama, Vladimir Putin(18 of29)
Open Image ModalPresident Barack Obama shakes hands with Russian President Vladimir Putin during arrivals for the G-20 summit at the Konstantin Palace in St. Petersburg, Russia, Thursday, Sept. 5, 2013. (AP Photo/Pablo Martinez Monsivais/Pool) (credit:AP)
Vladimir Putin, Angela Merkel , David Cameron(19 of29)
Open Image ModalRussian President Vladimir Putin, second right, covers Germany's Chancellor Angela Merkel warm blanket as they arrived for the Water and Music Show during the G-20 summit at Peterhof Palace in St. Petersburg, Russia on early Friday, Sept. 6, 2013. British Prime Minister David Cameron is on the right. 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama(20 of29)
Open Image ModalU.S. President Barack Obama smiles as he walks to a dinner event that will take place with other G-20 leaders at Peterhof 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/Ivan Sekretarev) (credit:AP)
Barack Obama(21 of29)
Open Image ModalU.S. President Barack Obama, right, walks to a dinner event that will take place with other G-20 leaders at Peterhof 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) (credit:AP)
David Cameron, Francois Hollande(22 of29)
Open Image ModalFrench President Francois Hollande, second left, speaks with British Prime Minister David Cameron, left, as they walk to a dinner event that will take place with other G-20 leaders at Peterhof 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/Ivan Sekretarev) (credit:AP)
Recep Tayyip Erdogan(23 of29)
Open Image ModalTurkey's Prime Minister Recep Tayyip Erdogan, right, walks with other G-20 leaders to a dinner event that will take place at the Peterhof 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/Ivan Sekretarev) (credit:AP)
Christine Lagarde, Ban Ki-moon(24 of29)
Open Image ModalFrom left, South Korea's President Park Guen-hye, United Nations Secretary General Ban Ki-moon and Managing Director of the International Monetary Fund Christine Lagarde walk to a dinner event that will take place with other G-20 leaders at Peterhof 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/Alexander Zemlianichenko) (credit:AP)
Vladimir Putin, Christina Fernandez de Kirchner(25 of29)
Open Image ModalArgentina's President Cristina Fernandez de Kirchner, left, speaks with Russia's President Vladimir Putin as they walk to a dinner event that will take place with other G-20 leaders at Peterhof 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/Alexander Zemlianichenko) (credit:AP)
Francois Hollande, Angela Merkel, David Cameron, Herman Van Rompuy(26 of29)
Open Image ModalFrom left, British Prime Minister David Cameron, French President Francois Hollande, Germany's Chancellor Angela Merkel and European Council President Herman Van Rompuy walk to a dinner event that will take place with other G-20 leaders at Peterhof 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama(27 of29)
Open Image ModalU.S. President Barack Obama waves as he walks to a dinner event that will take place with other G-20 leaders at Peterhof 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/Alexander Zemlianichenko) (credit:AP)
Dilma Rousseff(28 of29)
Open Image ModalBrazil's President Dilma Rousseff departs for a dinner with other G-20 leaders at Peterhof 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/Alexander Zemlianichenko) (credit:AP)
Barack Obama(29 of29)
Open Image ModalU.S. President Barack Obama, center, walks with other G-20 leaders in the background as they depart for a dinner at Peterhof 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/Alexander Zemlianichenko) (credit:AP)