Cuba's new Vice-President Miguel Diaz-Canel, right, listens to Cuba's President Raul Castro during the closing session at the National Assembly in Havana, Cuba, Sunday, Feb. 24, 2012. Raul Castro accepted a new five-year term that will be, he said, his last as Cuba's president and tapped rising star Miguel Diaz-Canel, 52, as vice-president and first in the line of succession. Diaz-Canel has risen higher than any other Cuban official who didn't directly participate in the 1959 Cuban revolution. At center Cuba's Minister of Foreign Affairs Bruno Rodriguez.(AP Photo/Ramon Espinosa)

A new 8th bell is hoisted into the belfry at St. Mary Redcliffe in Bristol, to replace the old number 8, which was cast in 1763 and suffering from a faulty tone. The new 8th was cast in Loughborough by John Taylor and Co church bell founders and is a 15-2-6 F#, weighing in at three quarters of a ton (790 Kilos). It is one of a peel of 12 in the church, which is probably the fifth church to be built on the site since Saxon times - the oldest surviving parts dating from 1185. Monday February 25, 2013. (Ben Birchall/PA Wire)

Protestors from the National Audubon Institute, the Gulf Restoration Network and other organizations stand outside Federal court on the first day of the Gulf oil spill settlement trial in New Orleans, Monday, Feb. 25, 2013. U.S. District Judge Carl Barbier is scheduled to hear several hours of opening statements Monday by lawyers for the companies, federal and state governments and others who sued over the disaster. Barbier is hearing the case without a jury. (AP Photo/Gerald Herbert)

Kyle Larson climbs out of his car after being involved in a crash at the conclusion of the NASCAR Nationwide Series auto race Saturday, Feb. 23, 2013, at Daytona International Speedway in Daytona Beach, Fla. (AP Photo/Chris O'Meara)

South Korea's new President Park Geun-hye administers the oath of office during her inauguration at parliament in Seoul, South Korea, Monday, Feb. 25, 2013. Elected in December, Park is believed to be the first Korean woman to rule in a millennium. (AP Photo/Kim Hong-Ji, Pool)

Matt Kuchar kisses the Walter Hagen Cup after defeating Hunter Mahan 2 and 1 in the final round of play during the Match Play Championship golf tournament, Sunday, Feb. 24, 2013, in Marana, Ariz. (AP Photo/Ted S. Warren)

(From left to right) Daniel Day-Lewis, Jennifer Lawrence, Anne Hathaway and Christoph Waltz hold their Oscars for acting during the 85th Academy Awards at the Dolby Theatre, Los Angeles. PRESS ASSOCIATION Photo. Picture date: Sunday February 24, 2013. See PA story SHOWBIZ Oscars. Photo credit should read: Ian West/PA Wire

Nepalese woman mountaineer Chhurim who has been recognized by Guinness World Records for climbing Mount Everest twice in the same climbing season poses with the certificate issued to her in Katmandu, Nepal, Monday, Feb. 25, 2013. 29-year-old Chhurim scaled the 8,850-meter (29,035-foot) summit on May 12, 2012, and again a week later on May 19. (AP Photo)

An Ultra Orthodox Jewish family walk during the Purim festival in the ultra-Orthodox Jewish neighborhood of Mea Shearim, Monday, Feb. 25, 2013. The Jewish holiday of Purim commemorates the Jews' salvation from genocide in ancient Persia, as recounted in the Book of Esther which is read in synagogues. (AP Photo/Sebastian Scheiner)

Frogmen on Westminster Bridge in central London as the Marine Conservation Society joins forces with BSAC to call for a commitment by Government to protect the seas around the English coast. PRESS ASSOCIATION Photo. Picture date: Monday February 25, 2013. Photo credit should read: Sean Dempsey/PA Wire

U.S. Secretary of State John Kerry, left, walks with British Foreign Secretary William Hague as they leave Downing Street in London, Monday, Feb. 25, 2013. Kerry has kicked off his first official overseas trip by meeting with British leaders in London on the first leg of a hectic nine-day dash through Europe and the Middle East. (AP Photo/Kirsty Wigglesworth)