British Prime Minister David Cameron has announced plans to block Internet porn by default on all British computers. Getty Images hide caption

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Getty Images

U.K. Cracking Down On Porn, Blocking It Unless Users Opt In

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The G-8 leaders speaking at this news conference in Northern Ireland all lost their ties, but British Prime Minister David Cameron (right) went a step further by ditching his jacket and rolling up his sleeves. Andrew Winning/WPA Pool/Getty Images hide caption

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Andrew Winning/WPA Pool/Getty Images

The victim: Drummer Lee Rigby. U.K. Ministry of Defense hide caption

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U.K. Ministry of Defense

From 'Morning Edition': Philip Reeves speaks with Renee Montagne about the attack

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President Obama and British Prime Minister David Cameron in the Oval Office of the White House on Monday. Jim Watson /AFP/Getty Images hide caption

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Jim Watson /AFP/Getty Images

British Prime Minister David Cameron (left) and Russian President Vladimir Putin viewed the Sochi Olympic Park along the Black Sea coast by helicopter Friday. Nikolsky Alexei /ITAR-TASS /Landov hide caption

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Nikolsky Alexei /ITAR-TASS /Landov

A rebel fighter raises his weapon after firing a missile Sunday toward Syrian government troops in the northern city of Aleppo. Syria's largest city has been the scene of heavy fighting for the past three months. Both sides control part of the city, and the fight has been a stalemate recently. Narciso Contreras/AP hide caption

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Narciso Contreras/AP