It’s been in the news for quite a while that IAEA says Iran has been approaching having nuclear bombs. They’ve enriched hundreds of pounds of uranium to 60%, which is well beyond the 3 - 5% needed for a peaceful electrical generating nuclear reactor. It doesn’t take much to enrich from 60% to 90% required for a bomb.
Actions speak louder than words: if Iran was having peaceful intentions, their centrifuges would not be under a mountain for protection. And they would not be enriching to 60%.