In the greatest public address any American President has ever given, Donald Trump claimed to have stopped Iran from developing atomic bombs (in the greatest lie every told).
Here are the facts. Ayatollah Ali Khamenei, the Supreme Leader of Iran at the time, supported the 2015 Joint Comprehensive Plan of Action (JCPOA) that provided international inspection of Iran’s enrichment of uranium used for its nuclear power plants to ensure that it did not enrich it to the level needed for atomic bombs. Khamenei repeatedly stated that the production, stockpiling, and use of nuclear weapons are forbidden under Islamic law. This religious position is formalized as a fatwa (a legal ruling under Sharia), which the Iranian government has cited for decades as proof of the peaceful nature of its nuclear program.
During his first term, President Trump withdrew the US from the JCPOA and international inspections stopped. A broad international consensus holds that the US/Israeli attacks on Iran this year will drive Iran to overcome its religious restraints on developing the bomb and proceed to do so out of its need to defend itself. Thus, rather than preventing Iran from developing atomic bombs Trump (and his friend Bibi) have probably forced Iran to do so. For good measure US/Israel killed Khamenei with an airstrike on February 28. Maybe Trump will find a way to blame NATO for all of this???