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Update at 1:17 p.m. ET. Support Afghanistan In 'Different Way':

During their meeting in the White House, President Francois Hollande, the new socialist leader of France, said he told President Obama that he was committed to withdrawing French troops from Afghanistan by the end of the year.

But, the AP reports, Hollande said he was committed to supporting Afghanistan in a "different way."

This was Obama's first meeting with Hollande.

The two leaders also said they wanted Greece to remain a part the European monetary union.

Before President Obama welcomes world leaders to Camp David and Chicago, new French President Francoise Hollande is expected to say he wants his nation's 3,300 troops home from Afghanistan by year's end. That could upset other NATO nations.

Among the key things to know about what's in the hundreds of pages of evidence and other materials related to the Feb. 26 shooting death of Florida teenager Trayvon Martin, which were released Thursday:

Facebook's much-publicized first sale of stock to the public started with a bang late this morning as the price per share jumped. But though the volume of shares sold was a record for an initial public offering, the stock's price gave up its gains as the day continued.

By the end of trading in the U.S., Facebook had settled right at the $38 initial offering price that had been set before shares went on sale.

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DAVID GREENE, HOST:

Greece keeps cutting its budget to help pay debts and avoid default but then its economy keeps contracting, making the problem worse. The new French President Francois Hollande wants to find a way to stimulate Europe's economy.

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This is MORNING EDITION, from NPR News. Good morning. I'm David Greene.

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And I'm Steve Inskeep.

Americans now have a little more information on which to base their debate about Trayvon Martin. The teenager's killing in Florida - where he was shot by a man named George Zimmerman - prompted an intense and politically charged national discussion about violence, about gun laws and about race.

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Let's get a sneak preview, now, of a coming attraction.

(SOUNDBITE OF SONG, "BELOVED OTTER-COLORED HORSE")

INSKEEP: Mongolia is the land of Genghis Khan and nomadic herders.

(SOUNDBITE OF SHEEP)

INSKEEP: And it's also now riding a mining boom.

(SOUNDBITE OF INDUSTRIAL CRASH AND HORNS)

INSKEEP: All next week, NPR's Frank Langfitt takes us to Mongolia where the rush to extract mineral resources is transforming a nomadic culture.