Syria's President Bashar-al Assad says reports of a chemical attack by his forces were "100% fabrication". In an exclusive video interview with AFP news agency, he said "there was no order to make any attack". More than 80 people were killed in the rebel-held town of Khan Sheikhoun on 4 April, and hundreds suffered symptoms consistent with a nerve agent. Witnesses said they saw warplanes attack the town but Russia says a rebel depot of chemical munitions was hit.