Recent Developments in Iran's Nuclear Dispute
January: IAEA confirms Iran is refining uranium to 20 percent fissile purity.
February: U.N. inspectors end talks in Tehran without inspecting the Parchin military installation.
March: EU agrees to renew talks with Iran after one year suspension. Iran says it will let inspectors into Parchin, with conditions.
April: Iranian President Mahmoud Ahmadinejad vows Iran will not surrender its nuclear rights.
May: Ahead of six party talks, IAEA head Yukiya Amano says he expects Iran to soon agree on inspections of nuclear sites.