In Jerusalem, as always, any mention of Israeli nuclear weapons produces a Pavlovian response. No, no, no - there's nothing to talk about and nobody to talk to.
In the Prime Minister's Office they talk a lot about Iranian nuclear weapons; it's the main issue preoccupying Benjamin Netanyahu. They're convinced that if we close our eyes we can keep hiding behind blessed ambiguity. That's apparently the reason the PMO declared that Israel was strongly against holding a conference in Helsinki by early 2013 to discuss a nuclear-free Middle East.