NEW : 106 killed , opposition says . CNN 's Joe Sterling and Saad Abedine reported from Atlanta . Comment: The rebel claim of capturing the base is called 'significant ' by the U.S. As the civil war rages , world leaders push to ensure chemical weapons are secure .
NEW : 106 killed , opposition says . Comment: The rebel claim of capturing the base is called 'significant ' by the U.S. As the civil war rages , world leaders push to ensure chemical weapons are secure .