Israeli intelligence officials said they learned in early 2017 that Iran had begun systematically gathering records on the country’s past nuclear weapons research and relocating them to a single repository in southern Tehran’s Shorabad district. The building, in a row of industrial warehouses, had no visible security presence or other features that might have tipped off an observer that it contained something unusual. Only a small number of Iranians apparently even knew of its existence, said an Israeli intelligence officer briefed on the details.
Mossad agents were able to learn the internal layout of the building, including the location and general contents of 32 safes that contained paper records, photos and computer-storage files from “Project Amad,” the code name for Iran’s nuclear project. The spies studied the building’s security features and tracked the movements and schedules of the workers who maintained the archive. Eventually they settled on a date — Jan. 31 — and a time window of exactly six hours, 29 minutes, in which they believed they could breach the facility, open the safes and remove half a ton of documents without being detected.
You quit it apparently, it never finished.