Nuclear Unveiled

Iran has staged an elaborate ceremony to unveil new developments in its nuclear program. Tehran says it has used domestically-made nuclear fuel in a reactor for the first time, and also unveiled more efficient enrichment centrifuges.

State television showed President Ahmadinejad inspecting the rods as they were loaded into a reactor. Western countries fear Iran wants to make nuclear weapons; Tehran says it only wants to produce its own energy.

The government unveiled the "new generation" of faster, more efficient uranium enrichment centrifuges at its Natanz facility in the centre of the country.

The head of Iran's Atomic Energy Organisation, Fereydoon Abbasi Davani, said they were three times more efficient than their existing capacity.

President Ahmadinejad was wearing a white coat at the research reactor in Tehran, and was also shown attending the ceremony to mark what he has called the great achievements in the nuclear sphere.

He said last week that his country would never halt its program to enrich uranium. In January the International Atomic Energy Agency (IAEA) confirmed that Iran had started the production of uranium enriched up to 20% at its Qom plant.

A deal to provide fuel for the reactor from abroad collapsed two years ago at which point Iran decided to make the fuel itself.

Iran is determined to show that it can master nuclear technology on its own, and that international sanctions against its nuclear program will make no difference.

The US and the European Union have recently imposed new sanctions targeting Iranian oil sales as part of a drive to increase international pressure on Tehran over its nuclear program.

Talks between Iran and six world powers - the US, UK, France, Germany, Russia and China - on the nuclear program collapsed a year ago and show little sign of resuming.