We are wrapping up the blog now. Here is a summary of developments over the course of today:

Syria

• Rebel fighters claim to have captured an air defence base at Taaneh, east of Aleppo.

• Turkey has scrambled fighter jets to its border with Syria for the first time since warning its southern neighbour that fast escalating tensions between the two former allies could lead to war.

• The Syrian government is selectively demolishing illegally-built homes in Damascus in order to clear out opposition supporters, according to a report in Emirates-based newspaper, The National.

• Lakhdar Brahimi, the international envoy on Syria, had a meeting with the Saudi king today and is due in Turkey tomorrow to discuss "all aspects" of the Syria crisis.

• The Syrian foreign ministry has accused Turkish prime minister Recep Tayyip Erdogan of lying "to justify his government's hostile attitude towards Syria" – and challenged him to produce evidence that the Syrian airliner intercepted over Turkey was carrying ammunition.

Egypt

• Clashes have taken place among demonstrators in Tahrir Square, Cairo.

Bahrain

• Riot police in Bahrain have fired tear gas and stun grenades in clashes with hundreds of anti-government protesters in the kingdom's capital.

• The clashes come a day after Bahrain and the UK signed a defence cooperation agreement, the official Bahraini news agency reports.