[Ed. – It could be ISIS. The attack occurred in Ahvaz, in extreme southwest Iran close to the border with Iraq. It’s actually a stupid place for Iran to be staging a military parade, because there’s a lot of unrest there in the largely Arab province, which has has troubled relations for decades with the regime in Tehran. Many Ahvazis perceive themselves culturally as more closely connected to the Arabs in southern Iraq. I’m not fully convinced it was ISIS — but it could have been. The reason would have been to attack Iran in her own territory as the purging of ISIS in Syria’s Idlib Province is prosecuted.]
Iranian President Hassan Rouhani vowed a “crushing” response after assailants sprayed a crowd with gunfire, shooting dead at least 29 people including women and children Saturday at a military parade near the Iraqi border.
The Islamic State (IS) jihadist group claimed responsibility for the rare assault in the southwestern city of Ahvaz, while Iranian officials blamed “a foreign regime” backed by the United States. …
Foreign Minister Mohammad Javad Zarif said the attack was carried out by “terrorists recruited, trained, armed & paid by a foreign regime”.
“Iran holds regional terror sponsors and their US masters accountable for such attacks,” he wrote on his Twitter account.