Turkey clearly has power projection ambitions, they want to become the dominant power in the Muslim world and Europe. Europe is going down, the vacuum of power is quite clear there. Muslims are divided and there's a lack of leadership there as well. Turkey wants to go nuclear, as Erdogan has publicly said before, and I think they will, because so far they've been able to improve their capabilities without getting labeled as a threat to world peace, something the Ayatollahs failed to do by constantly chanting Death to America and Death to Israel.
So, in essence, one should see this development as a piece of a larger puzzle, indicating their future ambitions. They may even go for nuclear triad at some point.
It's not about sanctions. It's about poor management in the Iranian system. Musalla in Tehran hasn't been built yet, after 4 decades! Building a Friday prayers space doesn't take 40 years. They have delayed the project so much that some parts of the project already require renovation. lol
The same goes for Iran's IKIA airport, Iran's Azadi Stadium, Tehran-North Expressway, Tehran's metro project after Ghalibaf left the Municipality of Tehran, etc. None of these projects require high-tech equipment that we do not have in Iran. It's all just poor mismanagement and corruption.