"REPENT, HARLEQUIN!" SAID THE TICKTOCKMAN 
Cameron's been very good in an Andrew Marr interview on Syria. He did call the Syrian National Coalition the Syrian National Opposition at the start, but he'd corrected himself by the end. But he'd got his talking points fairly straight, Assad is the cause of the rise of ISIS, we need to support the SNC and the FSA. Marr repeated Galloway's lie that the FSA doesn't exist, which Cameron wasn't confident enough in his material to reply directly to, but repeated that Assad's army had only made things worse. The actions of the government aren't likely to be that helpful, and in Iraq may not be at all, but at least there is some pressure on the government as a result of this prognosis to ensure that some shoddy deal to keep Assad in power is not made.
Just to make this clear once again, I'm not a fan of Cameron or his politics. I'd tend to agree with Henry David Thoreau that those who serve the state best, "necessarily resist it for the most part; and are commonly treated as enemies by it."