OBAMA SYRIA CHEMICAL WEAPONS RED LINE UPDATE: The UN says Syria’s Assad regime used chemical weapons at least 27 times.

A panel of United Nations rights investigators announced definitively on Wednesday that Syrian President Bashar Assad’s forces were behind April’s sarin gas attack on the rebel-held town of Khan Sheikhoun, which killed more than 80 people.

The findings were part of the latest UN report on the Syrian civil war presented in Geneva by the UN Commission of Inquiry on Syria. An earlier report by the Organization for the Prohibition of Chemical Weapons (OPCW) was not authorized to apportion blame or investigate culpability, only to establish whether chemical weapons had been used.

Investigators also revealed that they had documented 33 chemical weapons attacks since the war’s outbreak in 2011. Twenty-seven of those were carried out by Assad’s government forces, including seven between March 1 and July 7 of this year. The perpetrators in six attacks had not yet been identified, investigators said.

Samantha Power and the Responsibility to Protect crowd that damned George W. Bush for failing to respond to genocide in Darfur were unavailable for comment.