Domestic opposition to the central government in Tehran is known to be widespread, but has been difficult to substantiate and quantify because of the severe restraints on free public expression in Iran. Kurdish opposition to the IRI in Western Iran has always been much more pronounced and has been violently targeted for years, most notably in the Mykonos killings in Germany in 1992, in the Vienna assassinations in 1989 and in recent border clashes with Iranian Kurds in Iraq, which are now seen as a key element in rising tensions between Iran and the US. In a 12 September Gulf News article titled "Kurdish Revolt Makes Iran Uneasy," Amir Taheri reviews the history of Kurdish opposition to the Islamic Republic of Iran. Read it here.