www.huffingtonpost.com/2013/12/08/seymou...eport_n_4409674.html

In his piece -- titled "Whose Sarin?" -- Hersh reported that al-Nusra, a jihadi group fighting in Syria’s long-running civil war, had also "mastered the mechanics of creating sarin and was capable of manufacturing it in quantity.” Therefore, he wrote, “Obama did not tell the whole story” when stating with certainty that Assad had to be responsible, crossing a so-called "red line" that would trigger U.S. retaliation.