The Associated Press: Report: Ahmadinejad says Iran now has 6,000 centrifuges
Talkback
Title:#1: They make them
Name:Danny
City: NYCState:
The design originally came from Pakistan but the Iranians have moved it a long way forwards to the level of the current western designs.

Destroying the centrifuge manufacturing sites is the only way to stop the enrichment program and nobody knows where all of those sites are. Even if this is done they will have duplicated the tooling, you cannot destroy the knowledge they have acquired.