You don't have ignorance as an excuse on this one as it has been reported ad infinitum that both the UN and the French have released details of their reports which show conclusive evidence about where chemical weapons were fired from, the nature of these weapons and the necessary infrastructure for their storage, who they were fired at, and who we know for certain possessed exactly these weapons. Additionally the US and Britain have said the same thing without divulging the same level of detail. The only "conflicting reports" are the statements of Assad and Putin. It is my business who I waste my time talking to and who I consider a worthy partner in reasonable discussion. I'd be happy to discuss the next phase of the issue - the one that follows confirmation of who used chemical weapons in Syria - but not with someone who willfully blinds himself from known facts. What would be the point?