Blanca, a Colombian amateur painter and fan of US President Barack Obama, argues with a policewoman while trying to reach the hotel where the President stays, to give him the painting, in Cartagena, Colombia, April 12, 2012. (Luis Acosta/AFP/Getty Images)

Kuwaiti firemen from the national guard, the army and the oil sector joined efforts to contain a massive fire in a dump of more than five million used tires in Kuwait city, April 17, 2012. A number of Members of Parliament described the fire as an "environmental catastrophe" and vowed to demand a debate on the issue in a special parliamentary session. (Yasser Al-Zayyat/AFP/Getty Images)

Protesters dressed in baseball uniforms and cheerleading outfits calling themselves "The Tax Dodgers" and "Corporate Loopholes" perform during a tax day demonstration in front of the James A. Farley Post Office, April 17, 2012 in New York City. Dozens of protesters participated in a demonstration against loopholes that allow banks and corporations to pay lower income taxes than most individuals. (Justin Sullivan/Getty Images)

A Russian soldiers marches during a rehearsal of the Victory Day Parade in Alabino, outside Moscow, April 18, 2012. The parade will take place on the Red Square in Moscow on May 9 to commemorate the 1945 defeat of Nazi Germany. (Kirill Kudryavtsec/AFP/Getty Images)

Spain's Rafael Nadal hits a return to Finland's Jarkko Nieminen during the Monte-Carlo ATP Masters Series Tournament tennis match, April 18, 2012 in Monaco. (Valery Hache/AFP/Getty Images)

A Pakistani soldier wearing sunglasses looks on at the avalanche site during an ongoing operation at Gayari camp near the Siachen glacier, April 18, 2012. Rescuers are still searching for nearly 140 soldiers buried by the mass of snow and rock at Gayari camp near the Siachen glacier, 4,000 metres above sea level. (Aamir Qureshi/AFP/Getty Images)

A Green sawfish swims at Shinagawa Aqua Stadium aquarium in Tokyo, April 18, 2012. (Itsuo Inouye/AP Photo)

The director and founder of the Casoria Contemporary Art Museum, Antonio Manfredi, watches as one of the paintings from the collection burns in Casoria, Naples, Italy, April 17, 2012. Manfredi plans to burn three paintings every week in protest against government cuts in funding for museums and galleries. (EPA)

Commuters travel standing on a train engine of an overcrowded local train in Mumbai's Central line in Mumbai, India, April 18, 2012. Train services were disrupted following a midnight fire in a signal cabin. (Rajanish Kakade/AP Photo)