Iran is an expansionist, terrorist state whose meddling has (1) crippled its own economy, (2) sown bloodshed in a region that most sane people would not believe could hold any more, and (3) mortally offended certain groups with their own intentions of Islamic expansionism, the Saudis, not to mention the former (and very successful) proprietors of Islamic empire, the Turks.
This will not end well for the Iranians. The IRG has its share of blowhards, to be sure - the number of times their rhetorical might has set the Persian Gulf afire is enough for the entire Fifth Fleet to toast marshmallows over the side. But popping Turkey will only allow a perfect cover for NATO countries with a long list of reasons to slap the Iranians to do so with relative impunity. Anyone in Tehran who thinks that's a good idea needs his head examined.
I know the Chinese and Norks didn’t like to come across the Turks during the Korean War. I think the Iranians would become all too familiar with that sentiment really quickly.