The French do the Saudi’s bidding in international forums and negotiations. Kerry may soon be astonished when the French, who are a party to the “P5+1” negotiations refuse to sign the final agreement. Also would not be surprised if the French “repositioned” a few dusty but still functional nuclear weapons on Saudi soil. The real problem is that the Saudis are not investing so heavily in France because they have solid faith in the survivability of their regime in Arabia. They know its only a matter of time before the destructive storms of the “Arab spring” enter Arabia.
1. Since the early 1970s the Saudis have been funding Pakistan's nuclear program. going back to the days of Zulfikar Bhutto (the father of Benazir Bhutto).
2. The Saudis have been very clear that should the situation in the middle east deteriorate (read: the Persians get nuclear weapons capability), they will very quickly have their own nuclear option.
3. The Saudis own Chinese-made DF-3 (CSS-2) ballistic missiles since the 1980s, which are part of their strategic missile force. There is evidence that they may have upgraded to the DF-21 recently. They have several missile complexes, and these particular missiles are nuclear capable.
I would personally put Saudi Arabia as a high-probability nuclear power. It can become a nuclear power faster than Iran can as it would only need to plug and play what it got from Pakistan into its missiles.