Guerrilla group "White Shroud" is hunting down Islamic State in Iraq and the Levant fighters in eastern Syria.
A looming bloodbath is spurring a Kurdish revolt in Turkey that could spin out of control.
United States President Barack Obama vowed to continue air strikes against Islamic State fighters and pledged to build more international support.
Desperate women are seeking refuge from war in arranged marriages, despite reports of abuse.
A Western-backed coalition of Syria's opposition to President Bashar al-Assad says it is ready to work with the US to fight the Islamic State.
Islamic militants released US journalist Peter Theo Curtis on Sunday, less than a week after grisly footage emerged of the execution of James Foley.
A witness to the US raid in Syria has described how dozens of commandos arrived in the middle of the night on heavily armed helicopters.
The United States has revealed a military attempt to rescue slain journalist James Foley from terrorist group Islamic State in Iraq and the Levant.
Jihadists have killed 270 Syrian regime fighters, civilian security guards and staff since seizing a gas field in Homs, a monitoring group said.
The United Nations will vote on a draft resolution which will allow the delivery of humanitarian aid to Syrians without government consent.
Human Rights Watch has revealed how armed groups in Syria have used children as young as 15 to fight in battles, which violates international law.
The 'blood election' has been widely denounced – but it strengthens Al-Assad’s regime regardless.
The Syrian government is crushing rebel fighters and human rights organisations have evidence it is still using chemical weapons on its people.
Syria's governement says a presidential election will take place on June 3, but Western leaders say the vote is a "parody of democracy".
Turkish Prime Minister Recep Tayyip Erdogan says his armed forces shot down a Syrian military plane after it crosed into Turkish air space.
Syria's exiled opposition will be barred from a presidential election to be held before July, virtually ensuring Bashar al-Assad's re-election.
The international mediator for Syria has apologised for a lack of progress at "laborious" talks in Geneva.
Mediator Lakhdar Brahimi will meet representatives of the warring sides in Syria separately for the first few days to increase pressure on them.
Syria expects to remove 200 people from the city of Homs during a three-day ceasefire while humanitarian organisations provide aid to those remaining.