Iran plans 10 new enrichment plants in 2010/11

Enriched uranium can be used as fuel for nuclear power plants and, if refined much further, provide material for bombs. Iran currently enriches uranium to a level of 3.5 percent. A nuclear bomb would require 80 percent or more.

(Reporting by Hossein Jaseb and Hashem Kalantari; Writing by Fredrik Dahl; Editing by Jon Hemming)