In an interview with Al Jazeera from London, Sabah al-Mukhtar, a political analyst said, he doubts that a federal system could work in Iraq.
"I don't think it's going to happen," Mukhtar said. "The idea of federation cannot be based on sectarian or ethnicity. It's usually a geographical situation".
Mukhtar also said that there is "no effective" government in Iraq that could solve the recent sectarian violence.
"The dictatorship of Saddam Hussein has been replaced by the dictatorship of Maliki," he said, referring to Iraqi President Nouri al-Maliki.