That's my take too. For a variety of reasons, it was (is) a smart move on Syria's part.
UPDATE...
Note: The following news brief is a quote:
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http://www.ynetnews.com/articles/0,7340,L-3302848,00.html
Damascus report: Syrian officer killed in clash at US embassy
Published: 09.12.06, 11:25
At least one Syrian police officer was killed when gunmen attacked the US embassy in Damascus Tuesday, eyewitnesses said.
Further it was reported that the attackers detonated a car bomb across from the embassy building. According to reports no US nationals were hurt in the attack. (Reuters)
i disagree. troops placed around embassies have a fairly clear job, and they do it. hostiles are hostiles, and soldiers are trained to kill people and break things.
what would be surprising would be syrian troops standing aside, which would show clear orders from above on this specific event.