Right wing Israeli politicians such as former prime minister Binyamin Netanyahu and even centrist politicians like caretaker Prime Minister Yair Lapid have fulminated against any US renewal of the 2015 Iran nuclear deal or Joint Comprehensive Plan of Action (JCPOA). As with the loony Right wing in the US (increasingly the only Right wing there is), they typically allege that the JCPOA will allow Iran to develop a nuclear weapon. Since the treaty makes it virtually impossible for Iran to develop a nuclear device, this charge literally makes no sense.

Iran does not have a nuclear weapons program. It has a civilian program to enrich uranium for fuel for its Bushehr reactor. It has plans to expand the number of its nuclear power plants.

The way it would make a bomb if its leadership ever decided they wanted to go in that direction would be to run thousands of high-powered centrifuges to enrich the uranium and build up a stockpile of High Enriched Uranium (HEU), which could be further enriched in the thousands of advanced centrifuges, until you got it to 95% enriched.