FACTBOX: Sanctions against Iran

(Reuters) - European Union states agreed on Monday to impose new sanctions on Iran, including an asset freeze on its biggest bank, over its refusal to meet demands to curb its nuclear program.

Following are some details about the sanctions and those already imposed by the U.N. Security Council and the United States.

* WHAT DO THE NEW EU SANCTIONS INCLUDE?

-- The new sanctions will target businesses and individuals that the West alleges are linked to Iranian nuclear and ballistic programs.

-- The EU said it will publish names of those affected on June 24. Iran's biggest bank, Bank Melli will face an asset freeze under the moves, while visa bans will target "very senior experts" inside Iran's nuclear and ballistic programs.

* WHAT SANCTIONS HAVE ALREADY BEEN IMPOSED?

U.N. SANCTIONS:

-- The U.N. Security Council imposed three sets of sanctions on Iran, in December 2006, March 2007 and March 2008.

-- The first round covered sensitive nuclear materials and froze the assets of Iranian individuals and companies associated with the program. It gave Iran 60 days to suspend uranium enrichment, a process which can be used to make nuclear power plant fuel or bomb material. Iran did not stop.

-- The second round included new arms and financial sanctions. It extended an asset freeze to 28 additional groups, companies and individuals engaged in or supporting sensitive nuclear activities or development of ballistic missiles.

-- State-run Bank Sepah and commanders and firms controlled by Iran's Revolutionary Guards, including commanders of one of its units, the Qods Force, were included on the list.

-- The resolution invoked Chapter 7, Article 41 of the U.N. Charter, which makes most of its provisions mandatory but excludes military action. Iran again failed to meet a 60-day deadline to halt enrichment.

-- On March 3, 2008, the U.N. Security Council imposed the third round of sanctions for refusing to suspend sensitive nuclear activities. Tehran dismissed the council's decision as illegal and illegitimate.

-- The sanctions resolution called for more travel and financial curbs on Iranian individuals and companies and makes some restrictions mandatory.

-- It also expanded a previous partial ban on trade in items with both civilian and military uses to cover sales of all such technology to Iran.

-- The new resolution added the names of 13 individuals and 12 companies to the list of people and firms suspected of aiding Iran's nuclear and missile programs.