From the 7 million Iranian Kurds, majority who are Sunni. Shia Kurds inhabit Kermanshah Province, except for those parts where people are Jaff, and Ilam Province Province; as well as some parts of Kurdistan, Hamadan and Zanjan provinces. The Kurds of Khorasan Province in northeastern Iran are also adherents of Shia Islam. During the Shia revolution in Iran the major Kurdish political parties were unsuccessful in absorbing Shia Kurds, who at that period had no interest in autonomy. However, since the 1990s Kurdish nationalism has seeped into the Shia Kurdish area partly due to outrage against government's violent suppression of Kurds farther north.