All you need to create Trinity/Nagasaki plutonium implosion weapons is
raw uranium, NOT enriched, and heavy water, which anyone can make.
This is how the Israelis and North Koreans, both part of the axis of evil,
did it. The Pakis ran enrichment based on A.Q.Khan (PBUH) theft of
centrifuge plans from northern-european URENCO. Uranium bombs
are trivial.

The Iranians are running centrifuges because you can do more with
enriched fuel. And they, unlike the Israelis, signed the Nuclear Nonproliferation
Pact, which means the more advanced nuclear countries have to help them
with peaceful uses.

Dimona is aboveground. Kinda dangerous.