moscow

Russia's President Vladimir Putin, gestures as he walks past U.S. President Barack Obama, as he takes his place at a group photo outside of the Konstantin Palace in St. Petersburg, Russia .

Ivan Sekretarev/AP

Russia’s President Vladimir Putin gets a laugh as he takes his place at a group photo of G20 leaders outside the Konstantin Palace in St Petersburg, Russia.

U.S. astronaut Michael Hopkins and Russian cosmonauts Oleg Kotov and Sergey Ryazanskiy put on space suits before a training session at the Star City space centre outside Moscow...U.S. astronaut Michael Hopkins (L) and Russian cosmonauts Oleg Kotov (C) and Sergey Ryazanskiy put on space suits before a training session at the Star City space centre outside Moscow, August 23, 2013. Hopkins, Kotov and Ryazanskiy are scheduled to be part of a mission to the International Space Station (ISS) that will launch in September 2013.

Sergei Remezov/Reuters

US astronaut Michael Hopkins, left, and Russian cosmonauts Oleg Kotov, centre, and Sergey Ryazanskiy put on spacesuits before a training session at the Star City space centre outside Moscow. Mr Hopkins, Mr Kotov and Mr Ryazanskiy are scheduled to be part of a mission to the International Space Station that will launch in September 2013.

Britain's Mo Farah, right, crosses the finish line to win the men's 5000-meter final ahead of Ethiopia's Hagos Gebrhiwet, left, and Kenya's Isiah Kiplangat Koech, second from left, at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Friday, Aug. 16, 2013. (AP Photo/Anja Niedringhaus)

Anja Niedringhaus/AP

Britain’s Mo Farah, right, crosses the finish line to win the men’s 5000-metre final ahead of Ethiopia’s Hagos Gebrhiwet, left, and Kenya’s Isiah Kiplangat Koech, second from left, at the World Athletics Championships in the Luzhniki Stadium in Moscow, Russia, on Friday. 

Yelena Babkini and her husband Boris walk through Gorky Park with their bicycles after having been married earlier in the day in Moscow...Yelena Babkini (R) and her husband Boris walk through Gorky Park with their bicycles after having been married earlier in the day in Moscow, August 15, 2013. REUTERS/Gary Hershorn (RUSSIA - Tags: SOCIETY)

Gary Hershorn/Reuters

Yelena Babkini and her husband Boris walk through Gorky Park with their bicycles after having been married earlier on Thursday in Moscow 

United States' Inika Mcpherson competes in a women's high jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Thursday, Aug. 15, 2013. (AP Photo/Martin Meissner)

Martin Meissner/AP

United States’ Inika McPherson competes in a women’s high jump qualification at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia on Thursday 

Athletes compete in a women's 5000-meter heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia, Wednesday, Aug. 14, 2013. (AP Photo/Martin Meissner)

Martin Meissner/AP

Athletes compete in a women’s 5,000m heat at the World Athletics Championships in the Luzhniki stadium in Moscow, Russia 

Competitors jump a water obstacle in the men's 3000 metres steeplechase heat during the IAAF World Athletics Championships at the Luzhniki Stadium in Moscow...Competitors jump a water obstacle in the men's 3000 metres steeplechase heat during the IAAF World Athletics Championships at the Luzhniki Stadium in Moscow August 12, 2013.

Kai Pfaffenbach/Reuters

Competitors jump a water obstacle in the men’s 3,000m steeplechase heat during the IAAF World Athletics Championships at the Luzhniki stadium in Moscow on Monday

Sprinters from the Netherlands practice their starts

Kai Pfaffenbach/Reuters

Sprinters from the Netherlands practice their starts during a training session for the IAAF World Athletics Championships at the Luzhniki stadium in Moscow

Volunteers take a break during a rehearsal for the opening ceremony of the 14th IAAF World Championships in Moscow...Volunteers take a break during a rehearsal for the opening ceremony of the 14th IAAF World Championships at the Olympic stadium in Moscow August 7, 2013. The event will be held from August 10 to 18. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT ATHLETICS)

Fabrizio Bensch/Reuters

Volunteers take a break during a rehearsal on Wednesday for the opening ceremony of the 14th International Association of Athletics Federations World Championships at the Olympic stadium in Moscow

Russian police officers stand outside the embassy of Venezuela in Moscow...Russian police officers stand outside the embassy of Venezuela in Moscow, August 1, 2013. Fugitive former U.S. spy agency contractor Edward Snowden slipped quietly out of Moscow's Sheremetyevo airport on Thursday after Russia granted him temporary asylum, ending more than a month in limbo in the transit area. Venezuela with Nicaragua and Bolivia have offered Snowden refuge but there are no direct commercial flights to Latin America and he was concerned the United States would intercept his flight to prevent him reaching his destination.

Grigory Dukor/Reuters

Russian police officers stand outside the embassy of Venezuela in Moscow on Thursday, the same day it was announced that Edward Snowden, the National Security Agency leaker, has left the city’s Sheremetyevo airport after Russia granted him temporary asylum, ending more than a month in limbo in the transit area. Venezuela is one of the countries, with Nicaragua and Bolivia, to have offered Snowden refuge.