The details of the Turkish grounding of a Syrian passenger plane earlier this week remain murky, but that hasn't stopped Turkey and Syria from trading accusations.
Turkey, already on the brink of a conflict with Syria, may now be facing tensions with Moscow after grounding a flight from Russia on suspicion that it was carrying weapons for the Syrian regime
Several Syrian mortars landed in Turkey today. The two countries have exchanged fire for the past week, though Syria says it does not want a military confrontation.
While the US and other Western nations resist being drawn into the fighting in Syria, Turkey is feeling the direct effects of bloodshed and refugees, putting pressure on Ankara to act.
After Syria shelled a Turkish town yesterday and killed five civilians, Turkey returned fire and went to NATO. However, experts say Turkey's moves are more about deterrence.
An effort by Egypt, Saudi Arabia, Turkey, and Iran to present a solution for Syria seems to be collapsing because of lack of buy-in, despite strong national interests in ending the upheaval.
Fierce fighting in Aleppo left a UNESCO World Heritage Site in tatters as world leaders left the UN General Assembly meeting no closer to a resolution for the 19-month conflict.
The Free Syrian Army launched the offensive yesterday afternoon, opening up multiple fronts against the government throughout Aleppo in a bid to end a two-month stalemate.
Battles around Damascus have important implications for Syria's conflict, but Aleppo is likely to remain the central focus until either the rebels or government forces can sustain the upper hand.
Rebels said the explosions, felt throughout Damascus, hit Syria's military headquarters and caused dozens of casualties. But a regime spokesman claimed there was only 'material damage.'
UN envoy to Syria Lakhdar Brahimi told diplomats in New York that the situation in Syria is dire, and described the conflict's particularly heavy toll on children.
Lebanese living along the Syrian border are reporting rashes and other ailments. They suspect Syrian biological weapons are to blame, although weapons experts say that is unlikely.
Iran confirmed on Sunday what has long been suspected: It is providing assistance to the Syrian government in its war against an uprising. Iran's Qods Force is also operating in Lebanon.
Free Syrian Army fighters told the Monitor that bringing down President Assad trumps family ties, and that they are willing to fight, or even kill, brothers and cousins fighting for the regime.
The territory between the northern city of Aleppo and the Turkish border is firmly under rebel control, but aerial attacks from the Syrian Army leave residents far from safe.