|Drudge Report(yes, not the most trustworthy of sources) has an interesting article talking about an upcoming book which states that Israel has a nuclear arsenal of 80 some weapons.
The real thing of note is here though:
It mentions some things that I believe show it not to be reputable, though. First, North Korea should have more than 10 nukes by 2020. Unless of course the North falls apart. But more importantly, India, by every report I have seen, has a larger nuclear aresenal than Pakistan. And it has more than 10-15 nukes, as compared to the 25-35 Pakistani nukes. So I suspect that this report might not be entirely accurate, and should be taken with a grain of salt.