The tension between the United States and Afghanistan has reached a boiling point.

More details are emerging about Staff Sgt. Robert Bales, the U.S. soldier accused of killing 16 unarmed Afghans this past week, and there is still anger over the accidental burning of copies of the Quran by soldiers on a military base.

John Demjanjuk, the retired U.S. autoworker convicted of being a guard at in an infamous Nazi death camp, died Saturday at the age of 91. Demjanjuk died a free man in a nursing home in southern Germany, where he had been released pending his appeal.

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JACKI LYDEN, HOST:

If you paid any attention to the polls this past week, you might have come away pretty confused. For example in one survey, a plurality of Americans said that they disapproved of President Obama's performance by a wide margin. Another poll showed just the opposite.

To help explain why polls taken during the same period may give conflicting results, we're joined by Andy Kohut. He's the president of the Pew Research Center.

Andy, thank you so much for coming in.

ANDY KOHUT: Happy to be here.

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JACKI LYDEN, BYLINE: Every school invited to the NCAA basketball tournament has had a chance to play. So we thought we'd bring you details of every game. Well, maybe not details, but at least a mention from NPR's Mike Pesca. And what he lacks in specifics, he makes up for in rhyme.

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JACKI LYDEN, HOST:

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JACKI LYDEN, BYLINE: This weekend, the public radio program "This American Life" will air a retraction and apologize to listeners for a segment that aired in January about factories in China which make the Apple iPad. The story described hazardous working conditions at the plant. It was told by a man named Mike Daisey, who claimed to have interviewed workers injured there. Many elements of Daisey's story have now been discredited.