Radiopharmacy / Nuclear pharmacy. While peaceful, it's a delicate science and some kind of inspections are usually enforced. Thankfully, Iran did allow IAEA inspectors and is a signatory of the NPT (non-proliferation treaty). One could wish that was the reality of the nuclear operations of certain other states which are not scrutinized.

Some developments in this area:

https://tvbrics.com/en/news/iran-presents-15-developments-in...

https://wanaen.com/iran-surpasses-70-locally-produced-radiop...