Leaders from the Group of 20 nations smile for the cameras on Friday, but this year's summit wasn't as productive as the ones that preceded it. Getty Images hide caption

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G-20 Summit Marks Return To Economic Nationalism

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Rising Powers Flex Muscles On Global Stage

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Terrorist Plots Part Of Cat-And-Mouse Game

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Yemen Plot Puts Spotlight On Saudi Bomb-Maker

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In Information Age, Leaks Are Here To Stay

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Neodymium is displayed at the Inner Mongolia Baotou Steel Rare-Earth Hi-Tech Co. factory in Baotou, China. China has cornered the market on neodymium and other rare earths, with far-reaching implications for global trade. Nelson Ching/Bloomberg via Getty Images hide caption

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China Flexes Muscles With Rare Earth Export Cut

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Grim Mood At IMF, World Bank Meetings

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World Leaders To Discuss Averting Currency War

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Stuxnet Computer Worm Has Vast Repercussions

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An image from the Iran International Photo Agency shows a view of the reactor building at the Russian-built Bushehr nuclear power plant. The Stuxnet worm was found on personal computers at the facility, but Iranian authorities said "major systems" were undamaged. IIPA/Getty hide caption

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Cyberworm's Origins Unclear, But Potential Is Not

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Seeing The Internet As An 'Information Weapon'

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Soldiers monitor computer screens inside the U.S. Central Command's mobile headquarters, in this U.S. military photo from 2002. A major concern regarding cyber warfare is the difficulty in distinguishing military targets from civilian targets. Gary P. Bonaccorso/Getty Images hide caption

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Extending The Law Of War To Cyberspace

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Iranian President Mahmoud Ahmadinejad speaks at United Nations headquarters in New York on Tuesday. Seth Wenig/Associated Press hide caption

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Ahmadinejad Undeterred As Sanctions Take Bite

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