IS militants behead four Sunni tribesmen in Syria, monitor says
The Shaitat tribe, one of Syria's largest, rebelled against IS after it declared an Islamic caliphate in swathes of Syria and neighboring Iraq in the summer.
No direct combat for Iraqi Kurds in Kobani
Meanwhile, the Islamic State loses ground in Iraq.
The battle for Anbar could shape the future of Iraq. Here's why
The Islamic State has made gains in the province, and many fear Baghdad will be next.
US-led airstrikes have killed 521 fighters, 32 civilians in Syria: monitor
Six of the civilians were children and five were women, the Britain-based Syrian Observatory for Human Rights added.
5 reasons Turkey is dragging its feet in the fight against the Islamic State
Ankara's anti-Western rhetoric isn't new. Here's what is.
The US is just one of 23 countries battling the Islamic State
But it's the only Western nation that's bombing inside Syria.
This is the simple but effective Islamic State strategy to win hearts and minds
Village by village, the extremist group has manipulated Arabs, Yazidis and Christians alike with a campaign of kindness one day, terror the next.
Fiercest fighting in days hits Syrian border town
Islamic State militants attacked Kurdish fighters with mortars and car bombs.
US-led coalition jets strike Kobani, Islamic State shells hit Turkey
Islamic State militants have battled Kurdish fighters for a month to take control of Kobani.
Islamic State militants are reportedly training pilots to fly captured fighter jets
It was not clear whether the jets were equipped with weaponry or whether the pilots could fly longer distances in the planes.
Think the Islamic State is bad? Check out the 'good guys'
US-backed Iraqi forces and their band of ruthless Shia militia groups have been carrying out atrocities of their own against Sunni civilians.
Obama’s anti-IS strategy challenged by military and intelligence leaders
Commentary: Better to commit troops now to help ensure victory than continue a half-hearted, low-cost gamble.
Airstrikes help Kurds push back IS in Kobani, but it may be too late
Kurdish fighters won a symbolic victory in the Syrian Kurdish town with the recapture of a strategic hill.
Kobani latest: Islamic State fights way into center of Syria border town
Local politician: "If they manage to take control of that area, they will close all access to the town and will begin a massacre."
UK to Assad: After we deal with the Islamic State, you're next!
GlobalPost interviews British Foreign Secretary Philip Hammond on the strategy for defeating IS and the Assad regime.
Concerned Obama's war against the Islamic State is a clusterf*ck? Here's how Britain sees it
Exclusive: British Foreign Secretary Philip Hammond explains the grand strategy for Syria and Iraq.
Kurds hold off Islamic State in Kobani; fighters strike in Iraq
The top US military officer suggested that Washington may increase its role 'advising and assisting' Iraqi troops on the ground in future.
Kurds battle for heart of Kobani as UN fears for civilians
The pre-dawn attack came after the IS militants overran the Kurdish headquarters in the border town on Friday.
If Kobani falls, will Obama's Syria strategy collapse too?
If the Islamic State seizes full control of the city it would be able to boast that it has withstood American air power.
UN envoy calls on Turkey to prevent Srebrenica-style massacre in Kobani
While much of the population has already fled the Islamic State offensive, 500-700 mostly elderly people are still sheltering in Kobani.
Islamic State seizes large areas of key Syrian town despite US-led airstrikes
The UN says only a few hundred inhabitants remain in Kobani but the town's defenders say the battle will end in a massacre if Islamic State prevails.
Syrian Kurds say airstrikes push IS militants back from Kobani (LIVE BLOG)
Islamic State had been advancing on the strategically important town from three sides and pounding it with artillery despite dogged resistance from heavily outgunned Kurdish forces.
Kurds battle IS for key Syria town as fire spills over border
A Syrian Kurdish official said IS fighters were less than a mile from Kobane and air strikes alone won't stop them.
Parents of American held by Islamic State appeal for his release
Peter Kassig, 26, was threatened in a video issued Friday by Islamic State militants.
Islamic State pounds key Syrian town after slaying Briton
Kurdish fighters backed by US-led air strikes held back jihadists attacking a Syrian border town Saturday.
Horror in Britain over IS hostage beheading
Prime Minister David Cameron led tributes to the 47-year-old taxi driver who went to the region as a volunteer to deliver aid.
Islamic State says it has executed British hostage Alan Henning
In the 1-minute video, the Islamic State also revealed another hostage: American Peter Kassig.
The ferryman of Istanbul helps Syrian refugees
One man has made it his mission to help his Palestinian Syrian countrymen find safe harbor.
On Location Video: The Yazidi men and boys who survived an Islamic State execution
In village after village last month in Iraq, the Islamic State killed scores of Yazidi men. A few lived to tell about it.
Captured by the Islamic State, these two teenagers went through hell. Then they ran
Sara and Leila both survived the mass capture of Yazidi women and children in Iraq last month. These are their stories.
Obama says US underestimated Islamic State, while Al Nusra Front says West will be attacked
Monitoring group the Syrian Observatory for Human Rights said US-led airstrikes struck a grain silo in northern Syria, killing civilians.