Obama has repeatedly stated that there are "preconditions" for peace negotiations, the most important one being the downfall of the Syrian government, ie, regime change.
The intensity and frequency of the airlifts shipping arms to the rebels suggest a well-planned and coordinated clandestine military logistics operation.
Sending western troops into Syria would be badly received – especially in the UK, where by a 32-point margin (55%-23%) Britons reject the idea of sending in UK and allied troops.
A grim anniversary should have sent Obama on a visit to Baghdad with reparations for the Iraqi people, instead he's in Israel conferring on the next war in the Middle East.
Washington views any effort to curb Israel’s freedom to fly sorties when and where it fancies as a threat.
It wasn't just London -- Damascus, Athens, Seoul, Rome, Tokyo, Sydney - hundreds of cities worldwide witnessed the same thing.