[1] He joined the Iraqi opposition against the rule of Saddam Hussein after the invasion of Kuwait; and was sentenced to death in absentia, for his participation in a coup attempt.

In the parliamentary elections held on 7 March 2010, Saadoun won on behalf of the Unity Alliance of Iraq in Al Anbar province.

During his tenure, ISIL forces attacked and gained control of significant portions of Iraqi territory, Including Mosul in June 2014.

His alliance came first in the province of Alanbar Sadoun Al-Dulaimi was named as one of the people responsible[5] for the fall of the Iraqi city of Mosul to advancing ISIS forces in June 2014.

Al-Dulaimi was found responsible in a report compiled by the Parliamentary Committee for Security and Defense, a subcommittee of the Iraqi parliament, commissioned by then Prime Minister Haider Al-Abadi.