John Kerry actually said...

"It is a lot easier to push back against an Iran that doesn't have a nuclear weapon rather than one that does."

"Under the agreement, Iran's leaders are permanently barred from pursuing a nuclear weapon, and there are permanent restraints and access provisions and inspection provisions to guarantee that."

"Now, how do we enforce or verify so that that is more than words?"

"I might remind everybody, all of those other nations have nuclear power or nuclear weapons, and all of them are extremely knowledgeable in this challenge of proliferation."