Another article by Nawaf Obaid (bio in previous post) and is hardly reassuring:
Saudi Arabia has for past several years been laying the groundwork for a civil nuclear program with no PMDs (possible military dimensions). However, there is a strong possibility that the Kingdom might begin to engage in contingency planning for a defensive nuclear program with PMDs. This planning represents an emerging Saudi nuclear defence doctrine.

(Later) None should doubt that the Saudi scientific community possesses the know-how and technical infrastructure to realize this nuclear defense doctrine
Link:http://www.telegraph.co.uk/news/gene...r-weapons.html

Somehow I doubt KSA has such a national capability, given its track record in importing talent in the securitys ector and elsewhere. More likely the talent will be imported, from Pakistan in particular.