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

Iranian President Mahmoud Ahmadinejad waves in Pakdasht, southeast of Tehran, Nov. 23. Ahmadinejad on Wednesday said he was surprised at European moves to isolate Tehran's central bank. HO/Reuters/Landov hide caption

itoggle caption HO/Reuters/Landov

Italian Premier Silvio Berlusconi promised Tuesday to resign after parliament passed economic reforms demanded by the European Union. The debt crisis in Europe has been compounded by political problems. Andrew Medichini/AP hide caption

itoggle caption Andrew Medichini/AP

A poster warns U.S. companies of the threat of cyber-espionage. A new report released Thursday names China and Russia as the top culprits in the theft of U.S. intellectual property and technology. Courtesy of the Office of the National Counterintelligence Executive hide caption

itoggle caption Courtesy of the Office of the National Counterintelligence Executive

Instructor Mark Fabro leads an exercise at the Department of Homeland Security's cyberdefense facility at the Idaho National Laboratory in September. Training at the lab is intended to help protect the nation's power, water and chemical plants, electrical grid and other facilities from computer viruses such as Stuxnet. Mark J. Terrill/AP hide caption

itoggle caption Mark J. Terrill/AP

Adel al-Jubeir, shown in this 2004 photo, is Saudi Arabia's ambassador to the U.S. and was the target of an Iranian assassination plot, according to the U.S. government.

Paul J. Richards/AFP/Getty Images hide caption

itoggle caption Paul J. Richards/AFP/Getty Images