"Those nuclear weapon systems that North Korea has been driving towards for decades now don't provide the security that the North Koreans believe they do," he said in the interview. "In fact, what will provide them security is coming to a set of understandings with the United States and with the world to denuclearize. And when they do so, we'll provide the security assurances that are needed for them and for their people. Every nation has the sovereign right to defend itself. Then we can create economic opportunity and better lives for the people of North Korea as well."