All governments lie. And Iran’s desire for nukes is understandable as a deterrent against Israel or the US or anyone else. Nuclear powers don’t get attacked. I bet Ukraine wishes it hadn’t given all its nukes back to Russia after achieving independence.
That being said, Iran seems unlikely to want nukes merely as a defensive deterrent against attack. Once Iran has nukes, they will eventually use them on Israel or the US or someone else. The theocracy in charge of Iran wants to usher in the end times and bring on conditions that will allow for the return of the Mahdi/12th Imam – who many consider the Muslim savior and Christian Antichrist.
Read Joel Richardson’s books like Islamic Antichrist. Even better, read – Antichrist 2016-2019: Mystery Babylon, Barack Obama & the Islamic Caliphate