How effective was the US attack on Iran’s nuclear sites?

Analysts have long argued that while it is possible to disrupt the physical function of a nuclear facility and limit the scope of a programme through, for example, the killing of scientists, the breadth of technical knowledge acquired during the decades-long programme is impossible to destroy. 

Ultimately, the question is whether the US-Israeli attacks are seen as sufficient for Iran to capitulate, or whether they instead encourage the regime to accelerate its efforts to produce a viable nuclear weapon...

https://www.theguardian.com/world/2025/jun/22/how-effective-was-the-us-attack-on-irans-nuclear-sites-a-visual-guide