"They offer to hold talks but at the same time they threaten us and say we should accept their illegitimate demand to halt (enrichment work)," he told reporters in Malaysia.

"They want us to abandon our right (to nuclear technology)," he said at a summit of the group of Developing Eight countries in Kuala Lumpur.

Iran on Friday delivered its response to an incentives package by world powers trying to curb Tehran's nuclear programme, which the United States and its western allies fear is a cover to build atomic bombs. Iran, the world's fourth-largest oil exporter, says its plans are peaceful.

Tehran has repeatedly refused to suspend its uranium enrichment activities, as demanded by the major powers to start formal negotiations on the offer, which includes help to develop a civilian nuclear programme.

Enriched uranium can be used as fuel for power plants but also, if refined much more, provide material for nuclear bombs.

The offer of trade and other incentives proposed by the United States, China, Russia, Germany, Britain and France was presented to Iran by EU Foreign Policy Chief Javier Solana last month.

The row has caused speculation of military confrontation.

But Ahmadinejad said no country would "dare" attack Iran.

"Let alone America and Israel, even if 100s of countries come together they would not dare to attack Iran. They are fully aware of it."