VIENNA (AP) — A senior Iranian official says his country's new leadership speaks with one voice on Tehran's nuclear program and is more committed to making progress at the next round of talks with world powers than its predecessor.

Ali Akbar Salehi heads Tehran's nuclear program. He says he, Foreign Minister Mohammad Javad Zarif and President Hasan Rouhani have a "more full-fledged ... desire" to reach agreement than the previous government.

Salehi spoke Monday outside a 159-nation U.N. nuclear conference in Vienna.

Years of nuclear talks between Iran and the U.S., Russia, China, Britain, France and Germany have been inconclusive. A new round is expected within the next few months.

The world powers seek curbs on Iranian programs that could make nuclear arms. Tehran insists it does not want such weapons.

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