U.S. Senate lawmakers have released a plan for a new round of sanctions targeting Iran's energy sector. The bill aimed at choking funds, used by Tehran to allegedly develop nuclear weapons, will be mulled over on Thursday. But while Washington shows no sign of easing up on Tehran, Iran's Foreign Minister has welcomed the extension of the IAEA mission in the country. A team of UN nuclear inspectors may now prolong their stay in Iran beyond the initially planned three days. The minister was optimistic about the possible renewal of nuclear negotiations saying the IAEA visit is a step towards easing the tensions. However, American Radio host, Ralph Schoenman is skeptical about the talks as he thinks the UN body is under too much western influence.