Tehran, May 20 (IANS) Iran's Supreme Leader Ayatollah Ali Khamenei said on Wednesday that Tehran would **t accept "unreasonable demands" by world powers during negotiations over its disputed nuclear programme, and ruled out letting inspectors interview its atomic scientists. "They (P5+1 countries) are making new comments in the nuclear negotiations. Regarding the inspections, we have said that we will **t allow foreigners to carry out inspections of any Iranian military sites," Press TV quoted Khamenei as saying at the commencement ceremony for graduates of the Imam Hossein Military Academy.