Iran was front and center when the U.N. Review Conference of the Nuclear Nonproliferation Treaty opened May 3. The monthlong event, which takes place every five years, revisits a 40-year-old agreement meant in part to curtail the spread of nuclear weapons. This meeting comes as the U.S. is pushing for the U.N. to impose more sanctions on Iran for the lack of transparency surrounding its nuclear program. U.N. Secretary-General Ban Ki-moon said, "The onus is on Iran," though Iranian President Mahmoud Ahmadinejad, as usual, criticized the U.S. Later in the week, Ahmadinejad said he agreed "in principle" to Brazilian mediation of a nuclear-fuel-swap deal, which could keep further sanctions at bay, but there was no guarantee of progress.
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