After the U.S. denied Israel the air space through Iraq, Israel had no effective route into Iran, and thus no effective way to destroy those nuclear facilities which ultimately threaten Israel's existence. Now they have this route into Iran and effectively the "green light" to eliminate the nuclear facilities:
"Saudi Arabia gives Israel clear skies to attack Iranian nuclear sites"
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.
In the week that the UN Security Council imposed a new round of sanctions on Tehran, 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.
To ensure the Israeli bombers pass unmolested, Riyadh has carried out tests to make certain its own jets are not scrambled and missile defence systems not activated. Once the Israelis are through, the kingdom’s air defences will return to full alert.
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. Despite the tension between the two governments, they share a mutual loathing of the regime in Tehran and a common fear of Iran’s nuclear ambitions. “We all know this. We will let them [the Israelis] through and see nothing,” said one.
The four main targets for any raid on Iran would be the uranium enrichment facilities at Natanz and Qom, the gas storage development at Isfahan and the heavy-water reactor at Arak. Secondary targets include the lightwater reactor at Bushehr, which could produce weapons-grade plutonium when complete.
This article also describes why receiving this permission - to fly through Saudi airspace - is so important:
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. Aircraft attacking Bushehr, on the Gulf coast, could swing beneath Kuwait to strike from the southwest.
Questioned on the option of a Saudi flight path for Israeli bombers, Aharaon Zeevi Farkash, who headed military intelligence until 2006 and has been involved in war games simulating a strike on Iran, said: “I know that Saudi Arabia is even more afraid than Israel of an Iranian nuclear capacity.”
Israeli intelligence experts say that Egypt, Saudi Arabia and Jordan are at least as worried as themselves and the West about an Iranian nuclear arsenal.Israel has sent missile-class warships and at least one submarine capable of launching a nuclear warhead through the Suez Canal for deployment in the Red Sea within the past year, as both a warning to Iran and in anticipation of a possible strike.
This is big news. Many informed reports had stated that it was the lack of an effective air route to Iran which was preventing Israel from attacking these nuclear facilities. Now an air route into Iran has been provided.
Will Israel attack these facilities? Only time will tell. It depends on the sequence of events. If the northern border, and the ongoing conflict with Syria/Lebanon/Hezbollah heat up, a battle there would preempt the Iran situation. The same could be said of the evolving situation in Gaza.
It looks like a race - a race to ignite the powder-keg otherwise known as the Middle East. The region will erupt and it will erupt in a big way, as described by the prophetic scriptures detailed in Ezekiel 38-39, Isaiah 17 and Zechariah 12. The question remains "how" and "when".
We seem to be on the verge of answering both of these questions.