She didn't repeat any such thing. She merely stated that if they did attack, we'd respond.
Israel and everyone else there do not want us to perform a nuclear strike in the first place. Think of the radioactive fall-out and where it would end up.

Also, they, the Iranians, speak of the "Zionist State" which is what Israel was established as. I don't think that you're going to see a departure from that. I don't think they're going to be a secular state when they were created as a result of Hitler and others trying to wipe out everyone who was even remotely Jewish.

The funny thing here is that I don't think Israel is handling the terrorist strikes against it correctly and I wish we'd stop backing them so much. It's just one of a number of reasons that radical Islamic/Muslim groups use to justify their actions.