Bloody ISIS campaign spills across region, into Egypt

The Islamic State in Iraq and Syria earned its brutal reputation as it spread violence and terror across those two war-torn countries.

ISIS executes women by beheading for the first time as the group kills two married couples for 'witchcraft and sorcery' in Syria

Known for their extreme brutalism and use of summary executions, ISIS have reached a new level of evil with activists reporting that the jihadi militants beheaded two women in Syria for alleged 'sorcery.' 

Al-Qaida 'cut off and ripped apart by Isis'

Two of al-Qaida’s most important spiritual leaders have told the Guardian that the terror group is no longer a functioning organisation after being ripped apart by Isis. In a wide-ranging interview, Abu Qatada, a Jordanian preacher who was based in London before being deported in 2013, and Abu Muhammad al-Maqdisi, regarded as the most influential jihadi scholar alive, say the al-Qaida leader, Ayman al-Zawahiri, is cut off from his commanders and keeping the group afloat through little more than appeals to loyalty.

How Isis crippled al-Qaida

On 5 February, Jordanian officials confirmed that the intellectual godfather of al-Qaida, Abu Muhammad al-Maqdisi, had been released from prison. Though he is little known in the west, Maqdisi’s importance in the canon of radical Islamic thought is unrivalled by anyone alive. The 56-year-old Palestinian rose to prominence in the 1980s, when he became the first significant radical Islamic scholar to declare the Saudi royal family were apostates, and therefore legitimate targets of jihad. At the time, Maqdisi’s writings were so radical that even Osama bin Laden thought they were too extreme.

Isis's dirty bomb: Jihadists have seized 'enough radioactive material to build their first WMD'

The Isis militant group has seized enough radioactive material from government facilities to suggest it has the capacity to build a large and devastating “dirty” bomb, according to Australian intelligence reports.

ISIS women taking leadership roles

New intelligence reveals the role of terrorist wives. CNN's Barbara Starr reports.

Inside Mosul: What's life like under Islamic State?

Exclusive footage from Iraq's second city of Mosul reveals how Islamic State wields power over people's everyday life, a year after it was captured.

ISIS is turning US Humvees into Iraq's worst nightmare

More than two-thirds of the Humvees the US supplied to Iraq to fight terrorists have ended up in the hands of Islamic State militants.

And the Islamic State (aka ISIS, ISIL, and Daesh, has not wasted any time in converting those vehicles into one of its deadliest and most nightmarish tools: suicide car bombs.

According to Iraqi Prime Minister Haider al-Abadi, ISIS controls about 2,300 armored US Humvees. Most of those vehicles were seized after ISIS overran Mosul in June 2014.

In addition to being used in further attacks against Iraqi forces, these vehicles were sent over the border to Syria to help ISIS solidify its foothold there.

ISIS' frightening arsenal: Remote-controlled sniper rifles, steel plated suicide trucks

Captured ISIS weapons show the black-clad militants are developing an arsenal of sophisticated arms, and Kurdish fighters told FoxNews.com they fear the terrorist force's expanding manufacturing capability is making it more formidable by the day.

ISIS kills 34 Iraqi police with explosive-laden tank, officials say

At least 34 Iraqi police officers were killed and at least 48 more wounded Monday when an ISIS fighter drove a tank rigged with explosives into a joint Iraqi security forces base about 28 kilometers (17 miles) southwest of Samarra, two security officials told CNN.

Isis captured 2,300 Humvee armoured vehicles from Iraqi forces in Mosul

Iraqi security forces lost 2,300 Humvee armoured vehicles when the Islamic State jihadist group overran the northern city of Mosul, the prime minister Haider al-Abadi said on Sunday.

Second Saudi Arabia suicide bombing fuels Isis campaign fears

In the second attack of its kind in a week, four people have died after a suicide bomber targeted a Shia mosque in Saudi Arabia’s eastern province, fuelling fears of an organised campaign by Islamic Stateto foment sectarian tensions inside the conservative Sunni kingdom.

Isis fighter in Syria was 'beheaded in revenge attack'

A Christian fighter in Syria has beheaded an Islamic State (Isis) militant to avenge people killed by jihadis in north-east Syria, a monitor said on Friday. The Syrian Observatory for Human Rights said the incident took place on Thursday in Hasakeh province, where Isis occupies large areas of the countryside.

The women of ISIS: Who are they?

"I made my little steps ... I was trembling. Nervous. Scared..." Shams' breathless prose reads like a trashy romance novel, as she describes every tiny detail of her first meeting with her husband-to-be.

Isis releases footage of Palmyra ruins intact and 'will not destroy them'

Islamic State has released new footage depicting unscathed ruins in the Syrian city of Palmyra, and activists say the group has promised to spare much of the ancient site and only destroy statues deemed polytheistic – raising hopes that some of the most magnificent surviving ruins of antiquity may remain intact.

ISIS sexually brutalizing captured women, UN expert says

The Islamic State (ISIS) jihadists have shocked the world after seizing vast swaths of land in Syria and Iraq a year ago with their brutal atrocities against civilians.

ISIS executes 262, as it takes ancient Syrian city of Palmyra, group says

When ISIS captures a city, the bloodshed is hardly over, as the militants summarily execute captive fighters and residents by the dozens. In Syria, they have killed more than 250 of them in less than two weeks.

ISIS horror grows: Things to know this week about the terrorist group

Just when it seems the horror can grow no deeper, ISIS shows that man's capacity for cruelty knows no bounds.