The BBC has seen video and eyewitness testimony that appears to corroborate allegations of chemical weapons' use in the Syrian town of Saraqeb. So what do we know about the alleged instances of chemical weapons use in the conflict so far? Syria's chemical weapons stocks, and the...

The western Syrian town of Qusair has become a fiercely contested battleground between the forces of President Bashar al-Assad and rebel fighters. On 19 May, following weeks of skirmishes and bombardment by artillery and aircraft, government troops backed by Hezbollah militants launched a...

Russia says Damascus has agreed "in principle" to attend an international conference on the Syria crisis set to be held in Geneva in June. Its foreign ministry said the Syrian government would participate "in order for Syrians themselves to find a political path to a solution". It...

There has been a large explosion in the centre of the Afghan capital, Kabul, followed by heavy gunfire. Afghan Channel One TV quoted police as saying a group of assailants had entered the Directorate of the Afghan Public Protection Force (APPF). A guesthouse used by staff of the...