Moving into the media world is a logical move for Branson, and while he is not a major threat to Murdoch's empire, the Australian has made it clear he wants to protect his territory, Benjamin said.

CNN: Branson, Murdoch square off in media war

But he said it was logical that additional missile-defense elements, deployed specifically in response to the Korean threat, could be reversed if that threat no longer existed.

NPR: As US Talks Up Diplomacy, NKorea Takes Hard Line