Western diplomats at the U.N are working on the first stages of a resolution that proposes further sanctions against Iran over its nuclear programme.The measures include expanding travel bans and asset freezes on people connected with the nuclear industry.The move comes despite Iran's apparent acceptance of a deal to send most of its low-enriched uranium abroad in return for research reactor fuel rods. Washington has called on Iran to match its words with actions.Last month, diplomats said Iran had informed the International Atomic Energy Agency, IAEA that it did not accept the terms of the deal and had instead demanded a simultaneous exchange on its territory. The US and its allies fear Iran is attempting to develop nuclear weapons. Iran insists its nuclear programme is entirely peaceful.If President Ahmadinejad's comments are followed up by an Iranian approach to the IAEA stating that it is ready to negotiate on a uranium deal, then the whole picture would be changed.