Without ANY evidence. It really, truly amuses me how you guys, who really are the same group that demonize the WMD in Iraq argument. You really should have been "Well, there probably are WMDs, so yeah we should back this invasion" if you are willing to believe this is Israel or USA without evidence.
Without any evidence and you guys already know who did it. And you might be right, but then that'll just be a lucky guess. It could just as easily be home grown opposition forces opposed to the current regime, or any other number of possibilities.