One of the more controversial episodes of the Iraq war will be revisited in a military courtroom in California this week.

In November of 2005, a Marine squad killed 24 Iraqis, some of them women and children in the village of Haditha. Staff Sgt. Frank Wuterich led the squad of Marines, and on Wednesday he'll face voluntary manslaughter charges at Camp Pendleton.

Iowa's Republican Gov. Terry Branstad is a fierce advocate for the Iowa caucuses. At times over the past four months, he has seemed frustrated that candidates have not been in the state as much as in past years.

Branstad's message over and over to the candidates was not to ignore the voters of Iowa, because they take it personally.

"They want to see the candidates, and they take their responsibility very seriously," Branstad says.

One year ago, protesters across the Arab World began to rise up against autocratic rulers, forcing several from power. These revolutions have led to the region's biggest upheaval in decades. It's still not clear how these seismic changes will play out, and so far, the results have been mixed. In a six-part series, NPR is taking a look at where the region stands today. In the second installment, NPR's Lourdes Garcia-Navarro reports on how Islamists in Libya, long suppressed during Moammar Gadhafi's 42-year rule, are now able to operate freely.

As India's economy rapidly expands, there is a recurring theme that plays out across the country: Plans for major development projects come into conflict with traditional ways of life centered around farming.

One of those showdowns has been dragging on for years in the eastern Indian state of Orissa. A proposed $12 billion steel plant has been facing resistance from local farmers and fishermen, but an endgame may be at hand.

The project is being promoted by the South Korea-based firm POSCO, the world's fourth-largest steel producer.

Saudi Arabia said Monday that it will enforce a law that allows only females to work in women's lingerie and apparel stores, despite disapproval from the country's top cleric.

The 2006 law banning men from working in female apparel and cosmetic stores has never been put into effect, partly because of the views of hard-liners in the religious establishment, who oppose the whole idea of women working in places where men and women congregate, such as malls.

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MELISSA BLOCK, HOST:

There's a lot of debate these days about the cost of medical care and the risks. Is a drug for breast cancer patients worth the $100,000 price tag if it only adds a few months to a woman's life? Or should men routinely get blood tests for prostate cancer when the exam could cause more suffering than it prevents?

Well, today, a major medical group issued new ethical guidelines on whether doctors should consider cost when deciding how to treat patients. As NPR's Rob Stein reports, the group takes a provocative position.

Blustery winds and freezing cold temperatures today didn't slow down the Republican presidential candidates' campaigning on the eve of the Iowa caucuses.

Six GOP candidates — most with family members in tow — shook voters' hands and made their final arguments.

Here's a look at what our reporters are finding on the campaign trail:

-- Mitt Romney, who has edged into the lead in recent polls, is looking to deepen — not broaden — his statewide map in the final stretch, campaign adviser Eric Fehrnstrom tells NPR's Ari Shapiro.

States have long sought to restrict cellphone use by drivers because of safety concerns, and as the new year begins, several states are toughening their laws.

It turns out it's a hard habit to break; and for government officials, it's not easy to stay ahead of tech advances.

'Cognitive Distraction'

Tuesday night at 9 pm, join WYSO for special coverage of the Iowa Caucus from NPR. The 2 hour special will be hosted by Robert Siegel. The coverage will feature candidate speeches, newsmaker interviews, and expert analysis from NPR Contributors E.J. Dionne (The Washington Post) and Matthew Continetti (The Weekly Standard), along with polling insights from The Pew Center's Andrew Kohut. We'll also hear from NPR's Mara Liasson and Ron Elving.

Brazil had record trade figures in 2011, logging $256 billion in exports and maintaining a $29.7 billion surplus on the back of high commodity prices and strong Chinese demand, officials said Monday.

Exports to China hit $44.3 billion, an increase of more than 43 percent over 2010. In 2009 China surpassed the U.S. as Brazil's biggest trading partner.

"It was an exceptional year for Brazilian foreign trade," said Alessandro Teixeira, deputy trade minister, who said China represented 17 percent of Brazil's exports.