Syrian armed forces intensified the campaign against a two-month uprising on Wednesday, shelling the country’s third-largest city with tanks and detaining hundreds more across the country. Activists said the number of those killed since demonstrations began reached 757, with more than 10,000 still in custody.http://www.nytimes.com/2011/05/12/world/middleeast/12syria.html?_r=2&hp
Libya has oil. Syria does not.
We're bombing Libya in support of rebels. We're doing nothing in Syria.