Israel's air force on Thursday wrapped up a large-scale four-day exercise which simulated its ability to defend against missile and jet strikes from Syria and Iran, a military official said.

The exercise was aimed at testing the air force's ability to counter rocket and missile attacks from the Gaza Strip, Lebanon, Syria and archfoe Iran, as well as the infiltration of jets overland, the official told AFP.

This is the first time the Israeli army has simulated strikes from the Islamic republic, located more than 1,000 kilometres (620 miles) away, he said.

The drill, however, did not simulate a strike on Iran, the official said, amid foreign media reports that Israel had recently performed massive air exercises to simulate strikes on Iran's nuclear sites.

On Wednesday, Iran said it had successfully test-fired a new medium-range surface to surface missile capable of reaching Israel, a move which raised concern in the United States.

Israeli Defence Minister Ehud Barak said that the exercise "was successful and important. What we saw strengthens our security that there is someone we can trust."

Heavy air force jet and helicopter activity was noticeable across the country during the drill, among the biggest the air force has ever carried out.

An Israeli army spokesman said the exercise was "routine and part of the army's annual training plan and is intended to prepare the Israeli air force to successfuly face any possible threat."

Israel, widely considered to be the Middle East's sole nuclear armed power, suspects the Islamic republic of using its nuclear programme to develop atomic weapons, a charge that Tehran has long denied.

The Jewish state considers Tehran to be its arch-enemy because of repeated calls by President Mahmoud Ahmadinejad for Israel to be wiped off the map.

Israeli Prime Minister Benjamin Netanyahu has said that countering Iran's nuclear ambitions topped his agenda and that the Jewish state reserves its right to self-defence against Iran.