By Daryl G. Kimball, Executive Director, Arms Control Association Today, the U.S. Secretary of State John Kerry and Russian Foreign Minister Sergey Lavrov reached agreement on a detailed plan for the expeditious accounting, inspection, control, and elimination of Syria's sizable arsenal of chemical weapons, with provision for enforcement by the UN Security Council. Among other things, the plan calls on Syria to provide a full declaration of its stockpile "within a week" and "to achieve accountability for their chemical weapons, the Syrians must provide the OPCW, the UN, and other supporting...