The Syrian government has not allowed U.N. investigators onto the site in Damascus where Assad has been accused of using chemical weapons against his own people.
This damages the claim that there is “no evidence” that Assad has never used chemical weapons against his people because it means that the investigators in charge have literally not been allowed to gather the evidence in question.
Many are making the claim that the accusations that Assad has used chemical weapons against Syrian civilians is either overhyped or not true. This claim is made despite the testimony of numerous refugees about state violence in Syria made since the revolution in 2012. This testimony is as easy to find as anything you can type into Google search. There is also consistent evidence of Assad using state violence in Syria against the Y.PG. And the Y.P.J.