Mitt Romney campaigns with Puerto Rican Gov. Luis Fortuno at Lanco Paint Co. in Orlando, Fla., last month. The Puerto Rico's March 18 primary could be a significant source of delegates for the GOP candidates. Charles Dharapak/AP hide caption

itoggle caption Charles Dharapak/AP

Staff members use computers at a press center in Beijing. Security experts say hacking of U.S. computers from China is becoming an increasing problem. Greg Baker/AP hide caption

itoggle caption Greg Baker/AP

FBI Director Robert Mueller, Director of National Intelligence James Clapper and CIA Director David Petraeus appear before the Senate Select Committee on Intelligence on Capitol Hill on Tuesday. Win McNamee/Getty Images hide caption

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Fishing boats are seen in front of oil tankers on the Persian Gulf waters, south of the Strait of Hormuz. The European Union has announced plans to join U.S. efforts to slow the flow of oil from Iran, the world's third largest exporter. Kamran Jebreili/AP hide caption

itoggle caption Kamran Jebreili/AP

Catherine Ashton, the European Union foreign policy chief, speaks in Brussels on Monday following a meeting of EU foreign ministers. The EU has agreed to an embargo on buying oil from Iran in the latest sanction against that country for its nuclear program. Virginia Mayo/AP hide caption

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NPR's Tom Gjelten joined Angelina Jolie (right) on a panel about the film In the Land of Blood and Money. Also seen are Vanesa Glodjo (left) and Goran Kostic, who act in the film. Courtesy of FilmDistrict hide caption

itoggle caption Courtesy of FilmDistrict

The Internet Corporation for Assigned Names and Numbers, known as ICANN, is forging ahead with plans to sell new domain categories despite vocal opposition. The decision raises questions about who should govern the Internet. mipan/ hide caption

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A member of the Iranian military takes position in a military exercise on the shore of the Sea of Oman in December. Mohammad Ali Marizad/AP hide caption

itoggle caption Mohammad Ali Marizad/AP

Reporters interview Iranian Minister of Petroleum Rostam Ghasemi before the start of the 160th meeting of the OPEC Conference in Vienna, Dec. 14. The global market for oil complicates the issue of U.S. sanctions against Iran. Xu Liang/Xinhua /Landov hide caption

itoggle caption Xu Liang/Xinhua /Landov