The Israelis are "not suitable" for an intervention in Syria.

The Turks would possibly face imperialism rumours, as if they wanted to re-establish the Ottoman Empire.

The French would have no entry point, and their expeditionary forces would have troubles with the quite heavily-armed Syrian army. Their only option would be air strikes from the CdG (if the ship is operational at the time; dunno), but that wouldn't be much. Alternatively they might be allowed to use Cyprus as base for AdA strikes.

Same for the British; they couldn't do more than Cyprus allows.

Russia has rather been a supporter of Syria and will certainly not intervene.

Saudi-Arabia is an absolute monarchy that's more interested in getting over with the Arab Spring and the secular Syrian baathists than in protecting the Syrian people.

Jordan is too weak for intervention.

Iraq is too weak for intervention.

Lebanon isn't even strong enough to ward off Syrian influence domestically.

Italy and Spain have no significantly better intervention potential than the UK.



So who should in your opinion intervene? The Americans were the only ones crazy enough to sink trillions of dollars in the ability to beat up a medium-sized, very distant country that has a large and obsolete military.