Admiral Mike Mullen, chairman of the Joint Chiefs of Staff, warnedthat Iran is close to obtaining nuclear weapons. “Most of us believe that it’s one to three years, depending on assumptions about where they are right now. But they are moving closer, clearly, and they continue to do that...And so that leaves a pretty narrow space in which to achieve a successful dialogue and a successful outcome, which from my perspective means they don’t end up with nuclear weapons.”