Joe Lieberman in a Salon interview on giving a speech to Christians United for Israel:

I know that they were very supportive of Israel, as I am. That they were supportive of the war in Iraq, which I am. And that they were very agitated about the rise of this particular Iranian regime. So I certainly didn’t know — and I don’t know — I go before groups all the time when I don’t agree with them on everything.

Let’s cut to the chase and follow the logic:

Very supportive of Israel => Supportive of the war on Iraq => Supportive of action against Iran