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.

Fresh Air Weekend highlights some of the best interviews and reviews from past weeks, and new program elements specially paced for weekends. Our weekend show emphasizes interviews with writers, filmmakers, actors, and musicians, and often includes excerpts from live in-studio concerts. This week:

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:

As London prepares for an Olympic influx, the world's athletes are not the only ones limbering up. Composer Tom Hunt is at work with members of a British team who compete in the equestrian sport called dressage. He joins us from the BBC studios in Salford.

Thank you for joining us.

TOM HUNT: Thank you for having me.

LYDEN: The music that you compose for the equestrian competition, tell us how the music and the horse work together.

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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.

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JACKI LYDEN, HOST:

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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:

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, HOST:

As further details emerge about this week's shootings in Afghanistan, the situation on the ground there continues to develop. As we've heard, in recent years a lot of emphasis has been placed on the counterinsurgency effort, on winning hearts and minds as opposed to targeting terrorist cells. So what do these latest incidents mean for that already fragile effort? John Nagl is a military counterinsurgency expert. He is now teaching at the U.S. Naval Academy in Annapolis.