He is involved with Campaign Against Sanctions on Iraq (dissolved and replaced by Cambridge Solidarity with Iraq in October 2003) and Arab Media Watch. In the run-up to the 2003 Iraq war Rangwala wrote articles in newspapers and appeared on British TV, especially in the context of the "dodgy dossier" prepared by Tony Blair's government. Rangwala had discovered that this dossier was mostly plagiarised from a postgraduate student's thesis  and articles in Jane's Intelligence Review (with minor falsifications)  and traced back the people who had edited the dossier . He submitted written evidence to the House of Commons Select Committee on Foreign Affairs when it investigated the British government's information policy leading to the Iraq war . He has since published a number of articles on the Iraq war, especially in The Independent .