New details emerge on Kayla Mueller's ISIS captivity
White House reveals failed operation to free Mueller and other hostages during July operation in Syria
World
Deadly 100-vehicle pileup on S. Korea bridge
Scores injured as vehicles slam into each other in the fog close to Incheon Airport, near Seoul
Harvesting flowers for Valentine's Day
Flower sales spike around Valentine's Day. Most of the roses bought for the holiday come from Colombia
Iran marks revolution amid pressure for nuke deal
Hardliners shout "down with the U.S." in Tehran streets as talks aimed at easing West's suspicion over Iran's nuclear program grind on
Western embassies shut as chaos grips Yemen
France, U.K. join U.S. in removing staff from Sanaa posts as Houthi rebels cast dire warnings with a tenuous grip on power
Most U.S. troops fighting Ebola to be withdrawn from West Africa
Only 100 military personnel will remain after April 30, the White House says, citing a sharp drop in the number of Ebola cases
Putin and Egypt's president Sisi: A new international bromance?
As Russian president visits his counterpart in Cairo, Egypt rolls out the red carpet in a welcome fit for royalty
Ukraine troops, pro-Russia rebels intensify clashes
As both sides sought to gain more ground ahead of peace talks, Germany urged them to halt their fighting for fears it could derail Wednesday's summit
Scott Pelley: Kayla Mueller was a light in the darkness
CBS Evening News anchor says the letter Mueller wrote while in custody of ISIS embodies the same spirit of those written by some of our most remarkable humanitarians
ISIS responsible for mass grave, atrocities, Iraqi villagers say
As Kurdish fighters renew their call for U.S. weapons, villagers in northern Iraq claim ISIS killed and covered up dozens of Yazidi men
Obama: U.S. tried to rescue Kayla Mueller from ISIS last summer
The young American aid worker, whose death was confirmed Tuesday, was part of a rescue attempt last summer
20,000 foreign fighters flock to Syria, Iraq to join terrorists
A growing number of people, including at least 3,400 from Western countries, are joining ISIS and other terror groups, U.S. officials say
Obama phones Russian, Ukrainian leaders ahead of peace talks
The White House is pushing Russia to reach a diplomatic solution to the conflict in eastern Ukraine
Man in leopard suit portrays escaped animal at Tokyo zoo
The escaped animal drill even includes tranquilizing the animal and rushing it to the hospital in an ambulance
Held by ISIS
The Islamic extremists have publicized the deaths of several hostages
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Americans cast ballots as polls open across the country — live updates
Here's what Americans are voting on in today's elections
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Iran dismisses U.S. response to peace proposal as "not convincing"
Co-pilot's friend describes hearing audio of her last moments
Why some key races won't be decided on election night
5 people rescued in South Pacific after months at sea, 4 still missing
U.S. launches strikes on Iranian targets in Strait of Hormuz
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Coast Guard detains cruise ship in Miami, officials say
