The inspectors said "the environmental, chemical and medical samples we have collected provide clear and convincing evidence that surface-to-surface rockets containing the nerve agent sarin were used ... in the Ghouta area of Damascus" on Aug. 21.

Read more: http://www.ctvnews.ca/world/convincing-evidence-of-chemical-weapons-attack-in-syria-un-inspectors-1.1456372#ixzz2f5jdWTLO