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Iranian Nuclear Standoff Continues

2012 Developments:

January: IAEA confirms Iran is refining uranium to 20 percent fissile purity.

February: U.N. inspectors end talks in Tehran without inspecting disputed military site at Parchin.

March: World powers agrees to renew talks with Iran. Iran says it will let inspectors into Parchin, with conditions.

April: Iranian President Mahmoud Ahmadinejad vows Iran will not surrender its nuclear rights.

May: EU officials say talks in Baghdad with Iran found some common ground.

June: IAEA, Iran start more talks on access for nuclear inspections.