An increasingly complicated armed conflict is pitting rebel groups in Syria not only against the regime and its allies, but also against each other

Syrian rebels heartened by Sunni unity

Military gains on northern and southern frontiers point to co-ordination

Editorial Comment

US is right to extend fight against Isis but its goals must be defined
Syria’s sham election is a ‘tableau vivant’ of tyranny
Notion west can deal with Syrian leader must be rejected

Isis senses territorial gains in Syria

Regime weakness offers jihadis opportunity to advance

Palestinians flee Damascus refugee camp

Fierce fighting as Isis gains foothold in Syrian capital

Isis edges closer to Syrian capital

Palestinian district of Yarmouk under attack from jihadis

Fighters flock back to resurgent al-Nusra

Al-Qaeda affiliate ranks swell after gains in northwest Syria

Islamist groups seize Syrian city of Idlib

Hardline insurgents gain control of second province

Assad regime accused of gas attack

Reports claim six died in bombing of Sarmin

US willing to talk to Assad, says Kerry

Comments point to renewed push to end bitter Syrian conflict

Explainer: Syria’s militant groups

Jihadi organisations and non-Islamist brigades active in the conflict

US-backed Syrian rebel group dissolved

Hazm end blow to western efforts to fight jihadi forces

Lebanon border clamp adds to refugee woes

Curbs leave more Syrians stranded in a country mired in bloodshed

Turkey enters Syria to evacuate enclave

Burial ground of Ottoman forebear was under threat from Isis jihadis

Rockets from Syria hit Golan Heights

Israel returns fire and puts defences on alert

Tehran threatens Israel with retaliation

Fears of escalation after strike kills senior Iranian commander

Tensions rise between Israel and Hizbollah

Israel attack in Syria kills six, including Iranian commander

IRC helps educate Syria’s lost generation

Refugee charity provides education to children displaced by civil war

Syrian refugees fear never leaving Turkey

Alarm in Ankara at the growing costs of refugee burden

Syria accuses Israel of Damascus strikes

Explosions targeted military sites, opposition sources say

Aid cut sparks panic for Syrian refugees

World Food Program says it needs $64m for December alone

US and Turkey still divided on Syria path

‘Safe zones’ for rebels could be established near border