Escalate

I have no idea what should be done in Syria, but giving each "side" more and more weapons will have a pretty predictable outcome.

President Bashar al-Assad has said Russian anti-aircraft missiles have arrived in Syria, Lebanese TV reported, in a claim that is likely to dramatically increase tensions in the region and could provoke the Israelis to launch a strike against the weapons.

...

The deal between the Kremlin and the Syrian government has been in train for some time. But the S-300 shipment, if confirmed, appears to be Russian retaliation for the EU's decision this week to lift an arms embargo on Syria. Britain, France and others such as Turkey are seeking to arm the country's moderate opposition.