"Del Ponte... shocked Western governments in May 2013 by declaring that the United Nations had “strong suspicions” of Syrian rebels using sarin gas."

Well of course she shocked them. Western governments were determined to see the Syrian government fall, and so had wholeheartedly backed the Syrian rebels. No one was supposed to point out that the Syrian rebels included terrorist groups such as al Qaeda and Islamic State. And three years later when sarin gas was released in rebel-held territory, killing dozens of people, Western governments again refused to admit that the rebels were in possession of the chemical weapon. Instead the Syrian government was blamed for the "attack."

Love her or hate her, del Ponte calls it as she sees it, regardless of who wears the blame.