Natalie Nougayrède, theguardian
If Aleppo falls, Syria’s vicious war will take a whole new turn, one with far-reaching consequences not just for the region but for Europe too. The latest government assault on the besieged northern Syrian city, which has caused tens of thousands more people to flee in recent days, is also a defining moment for relations between the west and Russia, whose airforce is playing a key role. The defeat of anti-Assad rebels who have partially controlled the city since 2012 would leave nothing on the ground in Syria but Assad’s regime and Islamic State. And all hope of a negotiated settlement involving the Syrian opposition will vanish. This has been a longstanding Russian objective – it was at the heart of Moscow’s decision to intervene militarily four months ago.