CFR is a perfectly accurate source. 

The "Council On Foreign Relations" (CFR.ORG) is a recognized, legitimate think-tank that studies international terrorisim for the United Staes Govt. to claim they are "Not Credible" is idiotic.
They are as legitimate as any online newspaper or other source. They have studied Northern Ireland, and compliled a list of UDA/UVF killed by the IRA/INLA, and vice versa. These facts are good and will be included in the article.