We had an enrichment program from 65 to 84, but only on a small scale. At a similar time we were also only a week or two away from having nuclear warheads.

As a nation the pivot to having nuclear weapons is quite straight forward. The technology and resources are available, and the infrastructure has been researched and applied at smaller scales in the past. We're also quite invested in hypersonic projectiles, so it wouldn't take a whole lot to arm a formidable arsenal, the highest cost being political capital.

The implications as far as non-proliferation go are potentially quite grave [1]. It might be seen as the US opening the floodgate on the export of weapon-grade uranium outside of international oversight.

[1]: https://thebulletin.org/2021/09/the-new-australia-uk-and-us-...