The International Atomic Energy Agency Chief Mohammad El-Baradei has urged Iran to accept an offer to process its enriched uranium abroad by the end of this year. Speaking at a news conference in Berlin, he said a plan brokered by the IAEA in which Iran would send low-enriched uranium to Russia and France for conversion into the fuel for a Tehran medical reactor was a rare chance to defuse mistrust over its nuclear programme. He also advised the western powers not to impose further sanctions on Tehran.<br/> <br/>