Russian President Vladimir Putin and German Chancellor Angela Merkel chat during the opening of the Hannover Fair in Hannover, Germany, Monday, April 8, 2013.(Photo by Frank Augstein/AP Photo)

Russian President Vladimir Putin holds the hand of German Chancellor Angela Merkel as they visit the Russian booth during a tour through the Hanover Messe on the first day of the industrial trade fair, in Hanover April 8, 2013. Russia is the partner country of the Hanover fair 2013, which runs from April 8 –12. (Photo by Fabrizio Bensch/Reuters)

A demonstrator holds up a picture depicting Russian President Vladimir Putin with make-up, during a protest by the gay community in Amsterdam April 8, 2013. Russia does not discriminate against homosexuals, Putin told reporters in Amsterdam on Monday where he was greeted by gay rights and other activists critical of Russia's track record. Putin is on one-day visit in the Netherlands for the start of the Netherlands-Russia Year. (Photo by Cris Toala Olivares/Reuters)

Russian President Vladimir Putin and Queen Beatrix of the Netherlands toast after they unveiled a plaquette with hand imprint of Peter the Great, during a tour of the Amsterdam Hermitage Museum April 8, 2013. (Photo by Alexei Druzhinin/Reuters/RIA Novosti)

German Chancellor Angela Merkel, left, and Russian President Vladimir Putin, right, visit the Hannover Fair, in Hannover, central Germany, on Monday, April 8, 2013. (Photo by Alexei Druzhinin/AP Photo/RIA Novosti/Presidential Press Service)

A demonstrator holds up a picture depicting Russian President Vladimir Putin with rainbow circles on his face, during a protest by the gay community in Amsterdam April 8, 2013. Putin is on one-day visit in the Netherlands for the start of the Netherlands-Russia Year. (Photo by Cris Toala Olivares/Reuters)

A topless demonstrator with written messages on her back walks towards Russian President Vladimir Putin, left and German Chancellor Angela Merkel, right, during the opening tour at the Hannover Fair in Hannover, Germany, Monday April 8, 2013. Several activists stormed the booth of Volkswagen to demonstrate in presence of the politicians. (Photo by Jochen Lurbke/AP Photo/Dpa)