Saudi Arabia has conducted tests to stand down its air defences to enable Israeli jets to make a bombing raid on Iran's nuclear facilities, The Times can reveal. Defence sources in the Gulf say that Riyadh has agreed to allow Israel to use a narrow corridor of its airspace in the north of the country to shorten the distance for a bombing run on Iran. "The Saudis have given their permission for the Israelis to pass over and they will look the other way," said a US defence source in the area. "This has all been done with the agreement of the [US] State Department." Sources in Saudi Arabia say it is common knowledge within defence circles in the kingdom that an arrangement is in place if Israel decides to launch the raid. "We all know this. We will let them [the Israelis] through and see nothing," said one. The targets lie as far as 1,400 miles (2,250km) from Israel; the outer limits of their bombers' range, even with aerial refuelling. An open corridor across northern Saudi Arabia would significantly shorten the distance. An airstrike would involve multiple waves of bombers, possibly crossing Jordan, northern Saudi Arabia and Iraq. Passing over Iraq would require at least tacit agreement to the raid from Washington.