"The United States, France, Britain and Germany would like the number of enrichment centrifuges Iran maintains to be in the
low thousands, while Tehran wants to keep tens of thousands in operation. It now has about 19,000 installed, of which about 10,000 are spinning to refine uranium."
IAEA: Iran stopped answering questions about nuclear arms development
http://www.ynetnews.com/articles/0,7340,L-4586682,00.html