Find out what Lord Butler said about key issues and people by using the links below:
Pre-war assessments that Iraq sought uranium from Niger were "well-founded on intelligence", the Butler report has concluded.
The uranium claims were first made public in the September dossier
The controversial claims were first made in a dossier compiled by the British intelligence services on Iraq's weapons of mass destruction, made public in September 2002.
Nuclear watchdog the International Atomic Energy Agency, had subsequently said some documents supporting the uranium claim were forgeries.
But Lord Butler said the government had intelligence from "several
"The forged documents were not available to the British government at the time its assessment was made and so the fact of the forgery does not undermine it," the report said.