:: Yes, please add it if it is important information.  I cannot remember it being there, but if you can find the orphaned references and restore the information, it will improve the article.  It will need to go in the "As Islamic State of Iraq and the Levant" part of the "History" section.  Do you mean editors who are anti-ISIL are spoiling the article?  In my opinion at the moment the article is not always spoken in a neutral voice, which is against one of Wikipedia's main policies in WP:FIVEPILLARS.  Remember you can add your voice to the Talk page discussions on anything and if you do not agree with what is said there you must speak up.  It doesn't matter if you have not followed all the discussion, your opinion will be as valuable as any other editor's. ~