Like most countries, Turkey has a top secret document outlining perceived and actual threats. In Turkey it's commonly referred to as the "Red Book". Depending on the leaks one wants to believe, it includes Iran, Greece (not surprising), Kurdish northern Iraq and climate change as threat factors. Maybe. It's also less than 20 pages, apparently.
Nevertheless, it is interesting that Iran may be on the list given the "zero problems with neighbors" policy, and supports the complexity of Turkish foreign policy that the media likes to ignore.