Iraqi Sunni rebels who took up arms against the government signal that they are ready to revolt against Islamic State, says Jim Muir
Eight steps to understanding the bitter conflict
Who is fighting whom in Syria?
Explaining the forces involved in the conflict
Mapping the conflict
Key areas being fought over for control
Where have toxic weapons been used?
Guide to opposition
Who are the groups ranged against Assad?
Relatives and Alawite members around Assad
Features and Analysis
One year after a deadly chemical weapons attack in Damascus, hope of salvation has vanished for many ordinary Syrians
'Till the last drop of blood'
Jeremy Bowen finds defiance on both sides of the fight in Damascus
Struggling to survive
Orphans and filthy water - the plight of western Aleppo
Opponents of Bashar al-Assad are preparing for a lifetime of struggle
A ballot amid a battle
How the regime still feels secure enough to hold a national election
New and improved
What goes into designing a refugee camp?
Neither bread nor freedom
Presidential elections seal loss of hope for Syrians seeking change
Stalemate and ceasefires
How war-weariness ended long fight over Homs
Why Syria's President Assad can be confident of his survival