I’m not sure what I think about Pakistan providing nukes to Saudi Arabia, other than that I can’t be sure if the article is even accurate. One anonymous source is a thin reed.
You could claim that this is the result of recent Israeli saber-rattling, but really, it’s not. It’d be more accurate to claim that a nuclear Israel will inevitably encourage other Middle Eastern countries to get the bomb.
And, of course, a US-occupied Iraq changes the balance of power in the Middle East. This sort of thing is an inevitable consequence. It’s not clear that it’s an unacceptable consequence; Saudi Arabia with nukes is hardly the end of the world. But this move certainly shouldn’t be unexpected.