Further to the "Post-Attack Assessment [etc]" published by the ISIS - the Institute for Science and International Security, in its Weekend Edition just a few days ago The Wall Street Journal published an interview (the "Weekend Interview") with the Institute's president, David Albright. (WSJ, June 21-22, 2025). The interview was conducted (as many such Weekend Interviews have been conducted) by WSJ Contributor Tunku Varadarajan, who is a Fellow at the American Enterprise Institute and also affiliated with the NYU Law School.
David Albright has devoted a career to tracking nuclear weapons and anti-proliferation efforts (and, please note, this cursory description of his credentials as a source in this matter is not meant other than for convenience of the reader).
Even though the interview was conducted and its written output published prior to the United States armed forces' strikes against Irani nuclear sites, it is absolutely worth the time to read (and to locate first, given paywall, for non-subscribers). Incidentally, on another thread over in the realm of Accidents and Close Calls, some comments bounced back, forth and around about reliability of news outlet articles and their - often times questionable - sources. I would suggest the source for this Weekend Interview on this matter is rather similar to Coca-Cola . . . . . the real thing.