The report is independent, massive in scope and content, and has taken years to produce. It will take a long time to read but the parliamentary debates start today and will continue with a fuller debate next Wednesday. For a contrary view about the background, which is not all Blair, Bush and generals have a read of the Telegraph piece here:
http://www.telegraph.co.uk/news/2016/07/04/is-tony-blair-responsible-for-all-iraqs-bloodshed-the-truth-is-m/