This transport of the seed material for higher-grade nuclear enrichment, included a two-week airlift from Baghdad and a voyage across two oceans.

Its duration depends on the results of talks in which the Europeans are seeking a more definitive renunciation of nuclear enrichment.

He repeated his conditional offer to stop nuclear enrichment, made earlier this month:

Iran has said the proposal must include a plan for it to pursue nuclear enrichment.

In Iran similar claims are being made about nuclear enrichment.

Ahmadinejad will not bow to western pressure and meekly surrender nuclear enrichment.

And in two passages, he seemed to be making reference to Iran, locked in bitter talks with European negotiators over its plans for nuclear enrichment.

Diplomats have said it includes political and economic incentives and a promise to help develop Iran's nuclear program in return for its suspending nuclear enrichment.

Iran's suspected nuclear enrichment facility under construction at Qom.

He believes Iran is pursuing an "explosive" path in nuclear enrichment.