
1. Even Iranian nuclear program people have minimal knowledge of what and how much was damaged;
2. Because the bombs used explode far underground; damage would not be visible on the surface;
3. Iran's centrifuge complex could be destroyed by the bomb exploding in the chamber where they are located;
4. Iran's centrifuge complex could be destroyed by the bomb exploding in a chamber adjoining where they are located and causing the centrifuges' chamber's wall and/or ceiling to collapse or cave in;
5. Iran's centrifuge complex could be destroyed by the bombs cause enough shock and vibration to render the centrifuges beyond repair;
6. Iran's centrifuge complex could be made inaccessible long-term by the bombs destroying/collapsing tunnels accessing the centrifuges;
7. Some or all of the above.
After four years in Trump's first term of intelligence people withholding information from Trump, lying to Trump, lying to the public to undermine Trump, and leaking information to sabotage Trump actions and policies - as well as the above and the source of the annoymorous claim being the reliably Trump-Hating
NYT and CNN - this is just a hyper-partisan MSM effort to create doubt about a Trump and US military accomplishment.
Iran accepting a cease fire is highly suggestive that they know enough to know their nuclear ambitions have been set back for years or decades, not a few weeks or months. The dog isn't barking, it's whining and whimpering.