Rand Paul actually said...

"If we refuse to negotiate they will, I think, ultimately, get a nuclear weapon."

"I think a lot of the debate begins from a fundamental misconception of what sanctions can do and cannot do."

"I think it is important that if we do want negotiations and the only way we are going to get any behavioral change is through negotiations by actually lessening sanctions is the only way you get it."

"Sanctions are useful as a threat."