Mattis has done a great job on foreign affairs and especially ISIS. Far too many blog articles getting sourced as truth.
With all due respect, I suggest you read a little about the background of Frontpage and its founder, David Horowitz.
They do great work.
http://www.frontpagemag.com/about
Here is another link showing their many research projects...
http://www.davidhorowitzfreedomcenter.org/school-for-political-warfare/