Speaking on CNBC, Douglas Paal outlined how the United States could respond to increasing tensions on the Korean Peninsula. He expected that the United States will temporarily deploy bombers to the region, and also consider developing missile defenses and redeploying tactical nuclear weapons to the region. “If we do not convey a sense of confidence to our allies that we are serious about countering the new nuclear threat in their neighborhood, and they can’t trust the American nuclear umbrella, they will create their own. And then we will have a proliferation for which we are really unprepared in that part of the world or anywhere.”

This interview was originally broadcast by CNBC.