UN Secretary General Ban Ki-Moon, in reporting on the UN mission to investgate chemical weapons use in Syria, said the "results are overwhelming and indisputable".
He added: "There should be consequences for non-compliance. Any use of chemical weapons by anyone, anywhere, is a crime."
While the UN confirmed that sarin was used in a chemical weapons attack, conventional weapons are still destroying families in Syria.
The UN Secretary General has said there is "overwhelming and indisputable" evidence that chemical weapons were used in an attack in Syria.