If the United States doesn’t want to get involved directly, it should give Ukraine the resources to fight back.

A close read of Hamas’s founding documents clearly shows its intentions.

The probe into the gunman’s fellow foreign students found child pornography and social media interactions with extremist rhetoric.

The offensive outerwear was perhaps the most visible sign of overt antisemitism during the violent demonstration this afternoon, which came after a day and a half of inflammatory rallies.

The number of hate groups in America rose for the fourth year in a row, fueled largely by anti-immigrant sentiment, the Southern Poverty Law Center said.

ISIS has claimed responsibility for a series of Easter Sunday bombings in Sri Lanka that killed more than 300 people and injured 500 more.  Sri [...] More

The latest mass shootings have prompted calls for more vigorous action by U.S. counterterrorism authorities, but the target is elusive.

The return of top Syrian Kurdish commanders, a surge in French commandos, the arrival of Navy fighter jets and sleuthing by Iraqi spies have revived an effort that had stalled out.

The operation has led to “paralysis” at the agency and questions about what happens when once-fringe political parties come to power.

A police operation across several towns and cities yielded powerful guns and bomb-making materials.

Though TikTok's Terms of Service say that users cannot upload hateful content, the app is very lax about enforcing these rules.

With the demise of the Islamic State, a revived al-Qaeda and its affiliates should now be considered the world’s top terrorist threat.

Afghans don’t need a reminder that no one is safe from the country’s endless war, but they got one anyway on Tuesday.

A refugee of Nazi Germany, he dissected events that shaped history as well as his life.

A DHS memo cites recent arrests of individuals who have threatened government facilities and elected officials over health restrictions in response to the coronavirus pandemic.

The former head of the National Counterterrorism Center said he would not be surprised if right-wing domestic terrorist groups stage attacks in the United States around this November’s presidential...

The order for the evaluation from the intelligence community comes as judges continue to deny bail for suspects in the Jan. 6 Capitol riot.

Vivian Silver was feared to have been taken hostage from Kibbutz Beeri during Hamas militants’ Oct. 7 attack on Israel. Her family says she was killed.

Despite increased emphasis, options for law enforcement are limited.

Terrorism expert Bruce Hoffman and Colin Clarke identify the growing irrelevance of organizational structure among US domestic terrorist groups

The conduct of diplomatic relations shouldn't rest solely on the shoulders of presidents.

For the Kremlin, both escalation and withdrawal are too painful to contemplate.

White supremacist groups have carried out a majority of “terrorist plots and attacks” this year, according to a report by a think tank, the Center for Strategic and International Studies.

Britain was the second-largest supplier of troops to Afghanistan, and the United States’ rapid withdrawal from the country has left some embittered.

Mr. Biden spoke from the White House on Monday afternoon after the collapse of the Afghan government to the Taliban.

Now it’s setting its sights much lower.

Gunmen held members of the Israeli team hostage, eventually killing them, during the 1972 Munich Olympics. The attack was the first time a global audience had witnessed terrorism as it happened.

We cannot live in a world where an evil dictator can redraw international borders at will with threats of nuclear annihilation. And we don’t have to.

Bruce Hoffman, CFR’s Shelby Cullom and Kathryn W. Davis senior fellow for counterterrorism and homeland security, sits down with James M. Lindsay to discuss domestic terrorist entities, groups, and m…

The nation’s military has a history of downplaying white nationalism and right-wing activism, but the siege of the Capitol has created a new urgency for dealing with them.

The mass casualty theater attack in Moscow was a reminder that affiliates of the Islamic State have reorganized and infiltrated even powerful states.

Perhaps the most surprising part of Hamas’ devastating cross-border attack was its complexity. Rarely in history has a terrorist organization been able to

General Miller, the commander of US and NATO forces in Afghanistan, was present at the meeting but was not wounded. The the governor of Kandahar and the head of the province's National Directorate of...