CNN Fareed Zakaria GPS September 1, 2013 17:05:00
500-mile border with syria. you just heard my take. now let's hear from two experts on u.s. foreign policy. he served as national security adviser to president jimmy carter and richard haas is the president of the council on foreign relations. he served as director of policy planning at the state department and he is the author of "foreign policy begins at home." welcome. let me start with you. secretary kerry revealed on cnn on the preceding show that the united states now has independent confirmation of sarin signatures. do you believe that this case is now both clear and important enough fo...