U.S. President Barack Obama (R) shakes hands with Cyprus President Dimitris Christofias, as they pose for a group photo session together with European Commission President Jose Manuel Barroso (front L), German Chancellor Angela Merkel (top 2nd L) and Italy's Prime Minister Silvio Berlusconi (top L) at the EU-USA Summit in Prague April 5, 2009. REUTERS/Herwig Prammer (CZECH REPUBLIC POLITICS)