Iran says it’s ready for constructive talks with world powers. But it will not discuss what it calls its nuclear rights.The Islamic Republic is due to give its response in Vienna today to a UN-drafted nuclear fuel deal. Fears about the nature of Iran’s nuclear programme were heightened in September with the disclosure of a once-secret uranium enrichment facility near the holy city of Qom. The US and other world powers suspect Iran’s nuclear development plans are designed to produce nuclear weapons. Neither the International Atomic Energy Agency nor Iranian officials have commented on the IAEA inspectors visit this week to the site. The inspections were aimed at verifying that the reactor was intended to produce peaceful nuclear energy and not warheads. Under the draft deal Iran would send low enriched uranium abroad for further processing and eventual use in a research reactor.