Iran reports gain in test of missile fuel

Iran said on Wednesday that it had successfully tested a solid-fuel motor for its medium-range ballistic missile known as Shahab-3, raising concerns that it could reach its enemies now, including Israel and American forces in the region, with more precision.

Defense Minister Ali Shamkhani told state television the test was a success but did not say when it had been carried out. ‘‘When you fill a missile with liquid, you have to use it quickly,’’ he said. ‘‘With solid fuel, a missile can be stored for years. And in addition, it makes the missile more accurate and cheaper.’’

Iran’s ambition to develop its nuclear program and missile industry has been a major concern for the West. Iran announced large-scale production of the Shahab-3 last year.

If Iran were to develop nuclear weapons, the missile would make it possible to deliver them to targets more than 1,200 miles away.