Riot police prepare to disperse protestors from the streets of the western village of Shahrakan, Bahrain, March 19, 2012. Clashes erupted after thousands of mourners participated in the politically charged funeral for Sabri Mahfoudh, 27, whose death the opposition and his family blame on the effects of tear gas. (Hasan Jamali/AP Photo)

A woman walks past a light sculpture by 'Loop.pH' entitled 'Luminous Lace' in the Stone Hall at Kensington Palace, March 20, 2012 in London, England. Kensington Palace is due to reopen to the public on March 26, 2012 following a 12 million GBP renovation project. (EPA)

A wildfire sends up a huge wall of smoke, forcing authorities to temporarily close a section of U.S. Highway 34 east of Yuma County, Colo., when the fire filled the skies with so much smoke that firefighters couldn't see the flames, March 19, 2012. Evacuated residents of the small Colorado town of Eckley have been allowed to return home after firefighters contained most of the wildfire. (Tony Rayl/The Yuma Pioneer/AP Photo)

A man expresses his grief in front of the portrait of a relative killed in a helicopter crash in Afghanistan, during a ceremony at a military base in Ankara, March 20, 2012. A Turkish helicopter crashed into a house on the outskirts of Kabul on March 17, 2012, killing 12 Turkish soldiers and two Afghan civilians in what appeared to be Ankara's deadliest incident in Afghanistan. (Adem Altan/AFP/Getty Images)

A believer asking "Nino Fidencio" for a miracle is helped to submerge in the mud at "El Pozito" in El Espinazo, Monterrey, Nuevo Leon state, March 19, 2012. Thousands of believers took part in a procession along the town of El Espinazo to ask for miracles to "Nino Fidencio", a famous Mexican 'curandero' (folk healer), whose spirit still heals people, according to the legend. (Julio Cesar Aguilar/AFP/Getty Images)

Clara Loiter, 3, and her mother Jennifer Frericks, of Washington, blow bubbles under a Yoshino cherry blossom tree at the National Arboretum in Washington, March 19, 2012, with unseasonably warm March temperatures continuing. The National Capitol Columns, from the East Portico of the Capitol are in the background. (Jacquelyn Martin/AP Photo)

Landon Peterson peeks out of the voting booth while his mother Meghan votes March 20, 2012 at Christian union Church in Metamora, Illinois. White House hopeful Mitt Romney eyes a big win in President Barack Obama's home state as he seeks to clinch the Republican nomination and focus on November's general election. (Don Emmert/AFP/Getty Images)

Britain's Queen Elizabeth II gives a speech in response to Loyal Addresses marking her Diamond Jubilee presented to her from both Houses of Parliament at Westminster Hall in London, March 20, 2012 as Prince Philip, Duke of Edinburgh sits. The queen responded to members of parliament and peers following "a humble address" to the sovereign. (Ben Stansall/AFP/Getty Images)

Afghans gather for a new year ceremony at the Sakhi Shrine in Kabul, March 20, 2012, during celebrations marking the start of Noruz, the Afghan new year. Noruz, one of the biggest festivals of the war-scarred nation, marks the spring equinox marks the solar year of 1390. (Massoud Hossaini/AFP/Getty Images)