Iran has essentially mastered all of the complex science and technology that they need to have a completely indigenous nuclear weapons program. That means that our options on Iran are extremely limited, to regime change or as a last resort, the use of force.

You don't need to spend tens of millions of dollars on political consultants to tell you what you think when you already know what you think.

Well, I'm a libertarian conservative, so I believe in limited government/maximum individual freedom.

A strong State Department to me means a corps of career officials who believe that their job is to advocate America's interests and who are trained in effective advocacy, not schooled in accommodation.

There is no patriotic obligation to help advance the career of a politician who is otherwise pursuing interests that are fundamentally antithetical to your values. That's not the call of patriotism.

I think the regime in North Korea is more fragile than people think. The country's economic system remains desperate, and one thing that could happen for example would be under a new government in South Korea, to get the South Korean government to live up to its own constitution, which says any Korean who makes it to South Korea, is a Korean citizen. A citizen of the Republic of Korea. And you could imagine the impact that would have inside North Korea if people thought, "If I could get out and make it to South Korea, I could have a different life."

Don't get me wrong: I would love to be president.