President Barack Obama and Russian President Dmitry Medvedev signed a preliminary agreement Monday to reduce the world's two largest nuclear stockpiles by as much as a third, down to the lowest levels of any U.S.-Russia accord, and counter what Obama called "a sense of drift" in the countries' relations.

Robert S. McNamara, the cerebral secretary of defense vilified for his role in escalating the Vietnam War, a disastrous conflict he later denounced as "terribly wrong," died Monday. He was 93.

The FBI is taking the unusual step of declaring that Gov. Sarah Palin is not under investigation, as Palin herself left for Western Alaska and communicated to the world through her Twitter account.

Riots and street battles killed at least 140 people in China's western Xinjiang province and injured 828 others in the deadliest ethnic unrest to hit the region in decades. Officials said Monday the death toll was expected to rise.

A funeral will be held this week for a North Carolina National Guard soldier who was one of four killed last week by an improvised explosive in Iraq.

The ousted Honduran president, Manuel Zelaya, swept over Honduras Sunday evening as crowds of his supporters clashed with soldiers and riot police at the airport.

Vice President Joe Biden signaled that the Obama administration would not stand in the way if Israel chose to attack Iran's nuclear facilities, even as the top U.S. military officer said any attack on Iran would be destabilizing.

Analysis:A week before Senate hearings, Republicans are floundering in their efforts to trip up Supreme Court nominee Sonia Sotomayor, unable to find an effective message about why she's not fit to serve.

Four divisive issues could dash President Barack Obama's hopes of overhauling health care: cost, creating a government-run plan, taxing workers' benefits and penalizing employers that don't offer coverage.

Holiday snapshots and family details about the newly appointed head of Britain's MI6 intelligence agency have been removed from a Facebook page after a newspaper told the government about them.

One of the impoverished child stars from "Slumdog Millionaire" will move from his shanty home in one of Mumbai's more wretched slums into a new apartment this week, his mother said Sunday.

Police say former Washington Mayor Marion Barry has been arrested and charged with stalking a woman.

Fans began to celebrate Sunday after winning coveted tickets to Michael Jackson's memorial service at Los Angeles' Staples Center.

Underwater search teams have detected the acoustic beacons from the two flight recorders of a Yemeni jet that crashed last week in the Indian Ocean, France's crash investigation agency said Sunday.

Zimbabwe has pledged to remove its troops from diamond fields in the east, an official newspaper said Sunday, a week after a rights group alleged the military was committing killings and abuses in the area.

At least 1,000 rioters clashed with police Sunday in a regional capital in western China after days of rising tensions between Muslim Uighurs and Han Chinese, according to witnesses and photographs of the riot.

Two monorail trains crashed early Sunday morning in the Magic Kingdom section of Walt Disney World, killing one train's operator, emergency officials said.

For generations, bonobos have lived just outside the limelight, as their well-known cousin, the common chimpanzee, became a cause célèbre, largely through the good works of famed anthropologist Jane Goodall.

President Barack Obama will be racking up lots of frequent flier miles on Air Force One this week.

Insurgent attacks killed two British soldiers in the southern Afghanistan region where thousands of U.S. Marines pushed forward with the American military's biggest anti-Taliban offensive since the hard-line Islamist regime was toppled.