Syrian opposition war monitor and pro-government media oulets say suspected members of the Islamic State group have attacked three posts for Syrian government forces and pro-government gunmen killing at least 13

The Justice Department announced the arrest of a man they say planned to carry out attacks on churches over the weekend after pledging support to the terror group ISIS.

ISIS has claimed responsibility for the attack in Moscow that killed at least 144.

ISIS has a "strong desire" to attack the U.S. and other foreign powers -- a threat that is only growing -- retired Gen. Frank McKenzie warned on Sunday

A Colorado teenager has been charged with providing material support to ISIS.

Hundreds of Yazidi-Americans filed a civil lawsuit Friday against French conglomerate Lafarge S.A. for conspiring to provide material support to the Islamic State.

A British man accused of being one of the four ISIS "Beatles" who beat and killed U.S. hostages in Syria was faced down in federal court by two of their victims' mothers.

El Shafee Elsheikh faces a life sentence following his conviction by a federal jury.

The U.S. military said Saturday that U.S. drones "harassed" by Russian jets on Friday later carried out airstrike on a top ISIS leader

The Supreme Court on Thursday sided with social media giants in a case brought by families of victims in a terrorist attack in Turkey.

Four U.S. service members were wounded by an explosion during a helicopter raid in northeast Syria Thursday night.

A former Brooklyn man, who became a sniper and weapons instructor for ISIS, was convicted Tuesday of providing material support to terrorism and other charges.

Bilal al-Sudani, a top leader and organizer with the Islamic State, was killed in a risky U.S. military ground raid in northern Somalia, official said

A U.S. helicopter raid killed two members of ISIS in Syria early Sunday morning local time, U.S. Central Command announced

A Kansas mother who was convicted of leading an ISIS battalion was sentenced to 20 years in prison.

A company paid ISIS in order to keep its cement plant in Syria operable.

El Shafee Elsheikh was sentenced to 8 life terms for kidnapping and murdering journalist James Foley as well as the detention and murders of three others.

The U.S. military conducted a ground raid in northwestern Syria that captured a top ISIS leader, the U.S. military said Wednesday.

A Kansas mother accused of leading an ISIS battalion pleaded guilty, federal prosecutors in northern Virginia announced Tuesday.

Administration officials gave a behind-the-scenes account of President Joe Biden's role in the U.S. raid that left the leader of ISIS dead.

President Joe Biden said Thursday morning a U.S. Special Forces operation in Syria left the leader of ISIS dead.

A Kansas woman accused of joining ISIS increasingly became more radicalized, her former friend said.

Kansas woman Allison Fluke-Ekren allegedly helped train the women of ISIS.

France announced overnight that its military had killed an ISIS leader who was wanted by the U.S. for the deadly 2017 attack on a team of Green Berets in Niger.

New Zealand is reeling from a knife-wielding rampage at a supermarket that left six fighting for their lives and the assailant dead.

Secretary of State Antony Blinken on Monday called on coalition partners to "repatriate" their citizens imprisoned in Syria fighting for ISIS.

A Washington state man has been arrested for alleged efforts to join the Islamic State group, federal prosecutors said.

Top U.S. general in the Middle East is encouraged that move to send some Iraqi refugees from a refugee camp in Syria could stem the threat of an ISIS resurgence.

At least one American has been evacuated from Mozambique following deadly attacks by ISIS-linked rebels who left beheaded bodies strewn on beaches and in the streets.

US soldier arrested after alleged plot with ISIS to attack NYC landmark.

The vice president and Trump have changed their tune on using civilian courts.

The Justice Department has announced that two former ISIS guards have been transported to the U.S. to face charges for their role in the murders of American hostages.

The suspects are facing charges relating to the murder of American hostages.

A U.K. court has ruled that Shamima Begum, the British woman who joined ISIS as a teenager in 2015, is allowed to return to the country.

There remains the "high impact risk of a mass breakout" of Islamic State prisoners from detention camps in Syria, according to a new U.S. government report.

The wife of aid worker Jeffery Woodke makes a new plea to ISIS for his release amid concerns about the coronavirus, in first U.S. interview.

An American missionary abducted by Islamic State-linked terrorists in Africa three years ago is still alive and in captivity, the president of Niger told ABC News.

Terrorist organizations are "on the march" in West Africa and the Sahel with international efforts failing to curb the increase in violence, a U.S. general warned Tuesday

ABC News' James Longman spoke with women left in the wake of the conflict.

A Pentagon inspector general's report says the death of ISIS leader Abu Bakr al-Baghdadi had little immediate impact on the terror group's operations.