Facing ethnic revolts in both Baluchistan and Kur distan, the last thing that Tehran might have wanted was a similar problem in another corner of Iran with a non-Persian majority. Yet that seems to be happening in Golestan, one of Iran's 30 provinces, with the ethnic Turkmen community seething with anger against Tehran. It all started on Jan. 4, when a gunboat of the Islamic Revolutionary Guard Corps shot and killed a 20-year-old Turkmen fisherman in the coastal waters of the Caspian Sea. The authorities claim that the fisherman, one Hissmauddin Khadivar, had been part of an illegal fishing expedition...