Russian forces are now fighting inside Ukraine. Anderson looks into how the U.S. and other countries might respond.
Did ISIS use a notorious former CIA interrogation technique on Western hostages?
Despite the dominance of digital tools, a new wave of artists are turning to ancient technology.
Flight MH370 may have turned south earlier than originally thought. Rene Marsh reports.
Engineer Chris Malloy has created hoverbike which could help out in disaster zones in the future.
A volcano erupted in Papua New Guinea on Friday, spurting ash tens of thousands of feet into the sky.
The sister of a Pakistani prisoner described as the "poster girl" for Islamic jihad has urged ISIS hostage-takers to let their captives go.
Pro-Russia rebels in Ukraine should open a humanitarian corridor for surrounded Ukrainian troops to retreat from the battlefield, the Russian President's office said Friday.
Take a one-minute escape into the heart of Dubai.
Luxury Nevada ranch doubles as preserve for wild mustangs.
A body found in a Jerusalem-area forest is that of missing American Aaron Sofer, Israeli police spokesman Micky Rosenfeld said Thursday.
Beheadings, stonings, crucifixion. These are atrocities children witness at an ISIS camp for children in Syria, a 13-year-old boy tells CNN.
ISIS militants have torched oil wells near Mosul, Iraq, in an apparent attempt to cover their movements as Kurdish Peshmerga forces push closer to their positions, a Kurdish official said Thursday.
It is exceedingly rare for Western journalists to be allowed inside the Democratic Peoples Republic of Korea (DPRK) -- commonly known as North Korea. It is even less common for an American reporter to visit this reclusive nation, home to nearly 25 million people who are essentially isolated from the rest of the world.
An armed group detained 43 U.N. peacekeepers near Syria's only border crossing with the Israeli-occupied Golan Heights early Thursday, the United Nations said.
CNN's Atika Shubert speaks exclusively to two jihadis about the global reaction to the killing of James Foley.
Separatist forces in eastern Ukraine, backed by Russian tanks and armored personnel carriers, are battling government forces on two fronts, a Ukrainian military official says.
Dr Sanjay Gupta finds out how curiosity was the key ingredient to unlocking the potential of four young medical pioneers.
Four years ago Tom and Kari Whitehead knew nothing about the battle raging within their daughter's body.