The same wiki prominently points out:

Iranian politician Ali Motahari said the fatwa only forbids the use of a nuclear weapon, not its creation.

https://www.jpost.com/middle-east/iran-news/article-705027

>Despite Iran's insistence that its nuclear activity is for peaceful purposes only, former Iranian MP Ali Motahari revealed on Sunday that Iran "from the very beginning" aimed to make a nuclear bomb, in an interview with the Iran Student Correspondents Association.

We should be aware that the Iranian regime exists in a environment that justifies lying in situations where they sense the need to do so. It should be admitted that they are not the only ones.