Brazil’s Science and Technology Minister, Aloizio Mercadante, has called on the nation's most talented hackers to help understand how it was vulnerable to the recent LulzSec attack.
Kyrgyz women in traditional costumes and US military personnel wait before a ceremony to officially open a large aircraft ramp at the Manas airport near Bishkek, Kyrgyzstan.
Mexico's central bank chief Agustín Carstens faces an uphill battle against French frontrunner Christine Lagarde, who this week is lobbying India, China, and Egypt for support.
French Finance Minister Christine Lagarde is seeking to replace her compatriot Dominique Strauss-Kahn, who resigned as IMF managing director earlier this month after he was arrested for sex crimes in New York.
Defending champion Spain's Rafael Nadal returns the ball to Crotia's Ivan Ljubicic during their fourth round match of the French Open tennis tournament, at the Roland Garros stadium in Paris, on Monday.
Sgt. 1st Class Matthew Starr of the New York Army National Guard stands at attention as taps is played during a memorial service at the New York Division of Military and Naval Affairs in Latham, NY. The service remembered the 32 members of the New York Army National Guard and one member of the New York Naval Militia who have died on active duty since the 9/11 terrorist attacks.
European milk farmers light flares during a demonstration outside the European Parliament in Brussels. Milk producers protested against lower selling prices of milk.
Irish Guards are inspected on the parade ground by Master Tailor Lance Sergeant Matthew Else, (r.), at their barracks in Windsor, southern England. The Guards will perform ceremonial duties at the wedding of Britain's Prince William and Kate Middleton on April 29.
Saudi border guards demonstrate their skills during their graduation ceremony near Riyadh, Saudi Arabia.
Obama practices his soccer dribbling as he plays with local children during his tour of the Cidade de Deus Favela in Rio de Janeiro on Sunday.