U.S. President Barack Obama (L) and Nobel Laureate and Holocaust survivor Elie Wiesel are reflected in a glass wall during a moment of silence in the Remembrance Hall of the United States Holocaust Museum in Washington, D.C. (Reuters)

A man gestures at a market burnt in an air strike by the Sudanese air force in Rubkona near Bentiu, South Sudan. Sudanese warplanes carried out air strikes Monday, killing three people, residents and military officials said, three days after South Sudan pulled out of a disputed oil field. (Reuters)

A Buddhist monk buys an umbrella depicting pro-democracy leader Aung San Suu Kyi at a souvenir shop outside the headquarters of the NLD party in Rangoon, Burma. Suu Kyi's opposition party refused to take its new seats in parliament Monday because of a dispute over one word in the lawmakers' oath, but party officials said the issue would be resolved soon. (AP)

An anti-government protester looks on from inside his tent at Taghyeer (Change) Square, where protesters have been camping for more than a year, to demand regime change in Sanaa, Yemen. (Reuters)

A handout picture released by Bahrain's main opposition Al-Wefaq group shows protestors engulfed in tear gas fired by police during a demonstration in a Shiite village close to Manama. (AFP/Ho/Al-Wefaq Media Centre)

An activist of the main opposition Bangladesh Nationalist Party is reflected on a police officer's helmet as she shouts slogans during a nationwide general strike in Dhaka. Police opened fire on hundreds of stone-throwing opposition supporters who attacked a police station. (AP)

People walk inside Romania's National Library during its official opening ceremony in Bucharest. Opened in a refurbished communist-era building, the National Library has more than 12 million books. (Reuters)

Ryan Godfrey, from Australia (r), and Shannon Falcone, from Antigua, trim the mainsail on board PUMA Ocean Racing powered by BERG during leg 6 of the Volvo Ocean Race 2011-12, from Itajai, Brazil to Miami, Florida. (AP/Volvo Ocean Race)

Didi Senft, a cycling enthusiast better known as 'El Diablo,' poses in front of the National Stadium in Warsaw, Poland. Senft, who is also an avid inventor, has constructed a special bicycle to commemorate the Euro 2012 soccer tournament. (Reuters)

Birds perch on a branch during a spring snowstorm in Pembroke, New York. A spring nor'easter packing soaking rain, high winds churned up the northeast U.S., unleashing a burst of winter and up to a foot of snow in higher elevations inland. (AP)