Iran is a much tougher climb diplomatically [than North Korea].

The greatest threat that the world faces is a nuclear Iran. A nuclear North Korea is already troubling enough.

All of North Korea is a jail.

We are categorically against any new military nuclear power, be it Iran, be it North Korea, be it anyone.

Because there are little to no consequences for conducting cyberattacks, criminals and nation-states are becoming bolder in their threats and behavior. Russia, China, North Korea and Iran are increasingly hacking into U.S. companies and government networks for espionage purposes or financial gain.

My last passport, I had North Korea, Afghanistan, Iran, Iraq, Sudan, Liberia, Guinea... I had, like, every war-torn country in there.