pecifically, the issue at hand is the green part of the proposed pipeline: as explained above, it simply can't happen as long as Russia is alligned with Assad.
So there you have it: Qatar doing everything it can to promote bloodshed, death and destruction by using not Syrian rebels, but mercenaries: professional citizens who are paid handsomely to fight and kill members of the elected regime (unpopular as it may be), for what? So that the unimaginably rich emirs of Qatar can get even richer. Although it is not as if Russia is blameless: all it wants is to preserve its own strategic leverage over Europe by being the biggest external provider of natgas to the continent through its own pipelines. Should Nabucco come into existence, Gazpromia would be very, very angry and make far less money!
As for the Syrian "rebels", who else is helping them? Why the US and Israel of course. And with the Muslim Brotherhood "takeover" paradigm already tested out in Egypt, it is only a matter of time.
According to the Stockholm International Peace Research Institute, which tracks arms transfers, Qatar has sent the most weapons deliveries to Syria, with more than 70 military cargo flights into neighbouring Turkey between April 2012 and March this year.