VIENNA (AP) — In a significant move, Iran agreed Sunday to provide additional information sought by the U.N. nuclear agency in its long-stalled probe of suspicions that Tehran may have worked on nuclear weapons.

Iran insists it never worked — or wanted — such arms, and the U.N’.s International Atomic Energy Agency was pushing ahead with its investigation with expectations that Tehran would continue to assert that all of its activities it is ready to reveal were meant for peaceful nuclear use.