Islamic militants disguised as policemen killed 10 foreign climbers and a Pakistani guide in a brazen overnight raid against their campsite at the base of one of the world's tallest mountains in northern Pakistan, officials said.

The Pakistani Taliban claimed it carried out the attack at Nanga Parbat to avenge the death of their deputy leader in a U.S. drone strike last month.

The White House said early Monday it expected cooperation from Russia on returning fugitive intelligence leaker Edward Snowden back to the United States to face espionage charges.

"Given our intensified cooperation after the Boston Marathon bombings and our history of working with Russia on law enforcement matters -- including returning numerous high-level criminals back to Russia at the request of the Russian government -- we expect the Russian government to look at all options available to expel Mr. Snowden back to the U.S. to face justice for the crimes with which he is charged," said National Security Council spokesperson Caitlin Hayden.

Jon Stewart took the guest's seat Friday on Egypt's top satirical TV show, modeled after his own program "The Daily Show."

Stewart was brought to the set wearing a black hood and introduced by host Bassem Youssef as a captured foreign spy.

A huge-headed, duck-footed mix of beagle, boxer and basset hound was the upset winner Friday at the 25th annual World's Ugliest Dog Contest.

Walle (WAHL-ee), a 4-year-old mutt from Chico, California who was entered at the last minute, was judged most unsightly of 30 dogs at the Northern California competition.

At least three people were killed by floodwaters that devastated much of southern Alberta, leading authorities to evacuate the western Canadian city of Calgary's entire downtown. Inside the city's hockey arena, the waters reached as high as the 10th row.

Canadian Prime Minister Stephen Harper on Friday called the level of flooding "stunning" and said officials don't know yet if it will get worse, but said the water has peaked and stabilized and noted that the weather has gotten better.

A DEA agent has died in an apparent robbery attempt in Colombia, U.S. Ambassador Michael McKinley said Friday. Colombian authorities said the American agent was stabbed four times.

McKinley told local Radio Caracol that the robbery attempt occurred after the anti-drug agent left a meeting with friends at a Bogota restaurant and got into a taxi.

Brazilian President Dilma Rousseff spoke about her generation's struggles in battling a dictatorship during a prime-time speech meant to connect with the nation's youth who have energized widespread and at times violent anti-government protests.

The 10-minute address ended Rousseff's much-criticized silence in the face of the protests. She promised to make improvements in urban transportation and to battle corruption, but offered few details as to how that will happen.

About a dozen U.S. fighter jets will be flying and conducting training operations in Jordan, poised to respond if needed to protect allies if the war in neighboring Syria spills over the border, U.S. administration officials said Friday.

The increased show of U.S. military might — which brings the total number of U.S. forces in Jordan to as many as 1,000 — should be seen as a signal to Syria that it must confine its 2-year-old civil war within its borders, officials said. The officials said it is meant to show that the U.S. is committed to its defense relationship with Jordan and that America intends to maintain a strong presence in the region.

The Justice Department has charged former National Security Agency contractor Edward Snowden with espionage and theft of government property in the NSA surveillance case.

Snowden, believed to be holed up in Hong Kong, has admitted providing information to the news media about two highly classified NSA surveillance programs.

Bayern Munich will open its Bundesliga title defense at home against Borussia Moenchengladbach on August 9, when new coach Pep Guardiola makes his German league debut.

"It's a worthy lead into the season and for Guardiola," said former Bayern player Paul Breitner. "In 'Gladbach you have an opponent which belongs among the best of what the Bundesliga has had to offer over the last four decades."