Romanians perform fire stunts during an event to mark Earth Day in Bucharest, Romania, Saturday, March 31, 2012.(AP Photo/Vadim Ghirda)

Braga's Elderson Echiejile, from Nigeria, right, scores a goal past Benfica's goalkeeper Artur, from Brazil, during their Portuguese league soccer match Saturday, March 31 2012, at Benfica's Luz stadium in Lisbon. (AP Photo/Armando Franca)

Jajuan Kelley, of Atlanta, wears a Skittles wrapper over his mouth during a rally in memory of Trayvon Martin, the unarmed 17-year-old who was killed by a Florida neighborhood watch captain while returning from a convenience store with a bag of Skittles a

Uganda police detain a supporter of Uganda's top opposition leader Kizza Besigye outside the court in Kampala, Uganda, Wednesday, March 28, 2012. Besigye and his co-accused pleaded not guilty Wednesday and were freed on bail, from charges of convening an

Nuns wait as worshippers gather in Revolution Square for the arrival of the Pope Benedict XVI to celebrate a Mass in Havana, Cuba, Wednesday, March 28, 2012. Pope Benedict XVI wraps up his visit to Cuba on Wednesday with an open-air Mass in the shrine of

Palestinian members of the National Security Forces loyal to President Mahmoud Abbas take part in a training session in the West Bank city of Jenin, Thursday, March 29, 2012. As Arab leaders gather for a summit in Baghdad, Palestinian Authority President

President Barack Obama rolls up his sleeves as he speaks at a campaign fundraiser at the University of Vermont in Burlington, Vt., Friday, March, 30, 2012. (AP Photo/Pablo Martinez Monsivais)

A cloth seller waits in hope of selling some pieces to a wholesale buyer, as sellers said their business was suffering following the recent coup, at the Grand Market in Bamako, Mali Saturday, March 31, 2012. The countries neighboring Mali have condemned t

Real Madrid's Cristiano Ronaldo from Portugal, left, falls on the pitch with Osasuna's Roversio Rodrigues from Brazil during their Spanish La Liga soccer match, at Reyno de Navarra stadium in Pamplona, northern Spain, Saturday March 31, 2012. Real Madri

Relatives react by the coffin of Mohamed Merah during his funeral ceremony near Toulouse, southern France, Thursday, March 29, 2012. Mohamed Merah is blamed for a series of deadly shootings which have shocked France and upended the country's presidential

Election officials work inside a poorly lit polling station early morning before starting balloting in Wah Thin Kha, Myanmar, Sunday, April 1, 2012. Myanmar held a landmark election Sunday that was expected to send democracy icon Aung San Suu Kyi into par