[Enlightened1]

Secretary Mattis: U.S. Government Not Sure Who Carried Out Chemical Attack in Syria

http://freerepublic.com/focus/f-news/3646813/posts

[Snickering Hound]

https://townhall.com/tipsheet/chrisreeves/2018/04/11/secretary-mattis-us-government-not-sure-who-carried-out-syria-chemical-attack-n2470044

And if you actually read the article that had that lying headline Mattis never said that at all.