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The athletes have arrived, the venues are ready and expectation is palpable as the sporting world awaits the commencement of the 31st Olympic Games, the first ever Olympiad to be staged in South America.

An accidental explosion at a bar in Rouen, Normandy, in northern France sparked a deadly fire early Saturday, killing at least 13 people and injuring others, according to Rouen police.

John Kasich says he's no closer to endorsing Donald Trump for president, cementing his place as one of the most prominent holdouts in the Republican Party.

Fareed Zakaria says he wasn't using the label "bullsh** artist" lightly when he used it to describe Donald Trump.

When I took to the stage to speak at the Democratic National Convention last week, I did so to honor my son, Humayun, who was killed 12 years ago while serving in the U.S. military in Iraq. But I also spoke to remind the American people that American Muslims are an integral thread of the American tapestry.

A day at the pool was anything but a day of relaxation for a young mom from Kansas City.

The increasingly tense situation on the frontline between government forces and separatists in eastern Ukraine has resulted in a spike in civilian casualties, according to new figures released by the Office of the UN High Commissioner for Human Rights.

Take a look at 27 photos of the week from July 29 through August 4.

By day, Richard "Scott" Silverthorne is mayor of Fairfax, Virginia, the wealthy Washington suburb of 22,000 people. He's also a substitute teacher in the county public schools.

Chicago police, in a nationwide conference call and bulletin, warned of "civil unrest" and potential violence against cops following the department's anticipated release of video showing an officer fatally shooting a black man in the back, two law enforcement officials said Friday.

No matter where the President goes, this satchel is always just a few feet away holding the power to launch nuclear weapons. CNN's Brian Todd reports.

David Huddleston, known for his role in "The Big Lebowski," has died of advanced heart and kidney disease, according to his wife, Sarah Koeppe.

This year's U.S. women's Olympics gymnastics team doesn't have a nickname -- yet. But if this group wins team gold in the Rio Olympics, like the "Magnificent Seven" did in Atlanta in 1996 and the "Fierce Five" at London in 2012, then these women are going to need their own moniker.

Unspeakable violence, persecution, war and the subsequent hunger and disease is forcing families to flee from their homes and lands to join an unprecedented 65 million forcibly displaced people (approximately half of them children) across the globe. These homeless souls now constitute the greatest humanitarian crisis since World War II.

Archeologists discovered enormous stone walls buried at a location that some have claimed is the birthplace of the mythological figure King Arthur.

The man accused of killing an American woman and wounding five other people in a London knife attack has been charged with murder, London's Metropolitan Police said Friday.

Dion Leonard was competing in a week-long run across China's Gobi Desert when a friendly little dog started following him. CNN's Robyn Curnow reports.

The woman had left her home at 3 a.m. to arrive early at a market in Caracas where diapers would be sold at a subsidized rate. She stood in line for six hours with her 4-month-old baby -- you have to have the baby or a birth certificate with you to buy the diapers -- until members of the National Guard started shooting tear gas toward the line. She didn't know what was happening, but ran away to protect her son, she told us.

Trump backed off a false claim Friday morning, admitting he had not seen a video of a $400 million payment being unloaded from a US plane in Iran.