Kerry appeared in a short video explaining he "drove a very hard bargain" with Iranian negotiators to effectively set back their nuclear ambitions, The Hill reports. "We drove a very hard bargain to achieve what we needed to in terms of our verification and certainty about where they're going," Kerry said. “We drove a hard bargain because we have one unwavering purpose in our goal: President Obama has been absolutely clear that Iran cannot and will not acquire a nuclear weapon