I wonder if Iran got some sort of TOT from Russia (unannounced) for the TOR-complex and are essentially just producing new ones from scratch whilst adding domestic Iranian upgrades.
We know I.R.I AD technology is quite advanced so the R&D team would be able to implement their own advancements to TOR.
What do you think bro?
I think it's as good as certain that Iran applied in-house modifications not just to its own Dezful variant of the Tor, but basically to every domestic weapons system stemming from or making partial use of reverse engineering. Not just in order to upgrade capabilities where feasible, but also to keep the enemy in the dark as much as possible about technical specifications, as this increases potential risks for the enemy and restricts its war planning options accordingly.
As for undisclosed transfer of technology from Russia with regards to Dezful, for sure there didn't need to be, considering Iran's technological and defense industrial advancement as well as its extensive experience and expertise in reverse engineering.
This said, I'd say it's possible that Russia over the years provided Iran with technological assistance or documentation at least in a limited number of instances, with both sides keeping these sorts of transactions under wraps.
A look at Iran's arsenals, whether in the area of air defense, radars, ground forces equipment and a few others, will suggest that a portion of its newly developed weapons appear to have some connection to, or to be remotely inspired by Russian equivalents.
We know that in some cases like the 3rd of Khordad SAM, it doesn't go beyond mere outer resemblance, with the Iranian-made system having practically nothing in common with the Russian platform it seems to share external similarities with (in this example the SA-6).
In other cases, Iran got hold of token samples of Russian weaponry from third parties including but not limited to black market actors. Naturally, items such as the Ukranian-sourced Kh-55 come to mind. Syria could also have been a source for a couple of these.
This leaves a few systems which raise the question as to how Iran could have developed them domestically with zero input from the Russians, or why then the resemblance is so striking whilst Iran never got near any one of these. Pertaining to this category, Iran's Rezonans-style OTH radars for instance.
To summarize, there's no doubt in my mind that Iran has become extremely self-sufficient at all levels when it comes to weapons design and production (with the exception of a few types of armaments such as fighter jets, for well known and often cited reasons). However, I also think it's possible that on a select few items, there's been stealthy cooperation with Russia and possibly China.
Last but not least, I would add that Iran has reached a level where in my opinion such cooperation, limited as it might be, could well have become bidirectional. If I'm not mistaken, Iranian military officials reported that Russia was interested in Iranian know how on drones.
