. "The OPCW's Director-General Ahmet Uzumcu says the chemicals, including raw materials for making the deadly nerve agent sarin, have been packaged and are ready for transport to the port of Latakia but Syrian authorities say it is not safe to move them now.WHAT ARE THE SECURITY RISKS?A joint OPCW-U.N. mission to investigate alleged chlorine attacks in Syria was ambushed and briefly detained Tuesday" . . .