The WWTA’s mention of the Fakhrizadeh assassination as a catalyst for Iran’s nuclear program acceleration strikes me as new, though maybe I’ve missed something:
Iran is not currently undertaking the key nuclear weapons-development activities that would be necessary to produce a testable nuclear device. Since the assassination in November 2020 of nuclear scientist Mohsen Fakhrizadeh, Iran has accelerated the expansion of its nuclear program, stated that it is no longer constrained by any JCPOA limits, and undertaken research and development activities that would bring it closer to producing the fissile material for completing a nuclear device following a decision to do so.