US Secretary of State John Kerry: “We have learned through samples that were provided to the United States and that have now been tested from first responders in East Damascus, (that) hair samples and blood samples have tested positive for signatures of sarin…Each day that goes by, this case is even stronger. We know that the regime ordered this attack. We know they prepared for it. We know where the rockets came from. We know where they landed. We know the damage that was done afterwards. We’ve seen the horrific scene all over the social media, and we have evidence of it in other ways, and we know that the regime tried to cover up afterwards.”