Foreign Fighters

More than 40 foreign fighters were killed in the attack, according to Russian Lieutenant General Igor Konashenkov.

So far, fighters from the U.S., the U.K. and Georgia are confirmed to have died fighting Russian forces and there are reports that at least one South Korean has also been killed.

In a new video address, the Ukrainian president vowed Russia will "pay back the full price" following its invasion of the country.

The United States may not send troops into Ukraine during the war against Russia, but Americans and veterans can't join the fight.

Some 2,500 ISIS foreign fighters remain in Kurdish prisons in northeastern Syria, but the Turkish operation may threaten the security of such facilities.

Some 850 foreign ISIS fighters remain in the custody of U.S. allies in Syria as Washington eyes a swift exit from the protracted Middle East conflict.

Samantha Sally and four children are being held in Syrian-Kurdish custody.

The group is thought to be the biggest friendship groups from the West to join ISIS.

Hundreds of Westerners have enrolled to fight ISIS. A new documentary shows what happens when they come home.

The U.S. military on Thursday retreated from a top general's claim about the number of foreign fighters joining ISIS.

Around 200 people from the Netherlands are estimated to have joined the militant group.

Top Libyan commander says that the group "exploited a security vacuum."

The radical Islamist group has continued to grow in influence in North Africa.

Jack Letts's parents told say son suffers from "severe" obsessive compulsive disorder.

New research says that the group runs domestic cells and training camps in Europe.

Hundreds of Germans have left the country to join Islamic State in Syria and Iraq since 2012.

Tunisia, Saudi Arabia and Russia have the largest number of fighters in Iraq and Syria.

From Ukraine to Tibet, motives remain the same for victims of a brutal invasion.

The surveys ask children as young as nine about their religious beliefs.

The military is analyzing the footage to identify fighters who might hold positions of power within the Nigerian Islamist militant group.

Dozens of people from the Minneapolis-St. Paul area have attempted to travel overseas to support Islamic State or al Shabaab since 2007, including six young men charged Monday.

Interior minister announces welfare loopholes being closed on 1,200 French jihadists fighting in Iraq and Syria.

Including this morning's arrests, Spanish police have arrested 21 people linked to Islamic militant activities so far this year.

A new video features deaf-mute brothers who claim to be traffic wardens in militant regime

Almost all the American Islamist fighters who went overseas ended up dead or in prison.

Libyan foreign minister calls on international community to prevent flood of extremists.

There are now over 20,000 foreigners who have joined Sunni militant groups in Middle East.

Three teenage girls from Denver who had been missing since last week and were reported to be traveling to Turkey were picked up in Germany and sent back home, U.S. officials said on Tuesday.

A plan to tackle groups like ISIS will be subjected to a vote of the Security Council later this month will chaired by US President Barack Obama