George Clooney has a satellite he uses to keep track of a warlord. Individuals have capabilities which were previously accessible only to nations. I wonder if it is possible that an individual might intervene in North Korea, instead of a nation... but the parallels of a individual intervening in another nation's affairs sound a lot like terrorism. Some more thinking to do here...
The Logan Act[1] might be a place to start, though it's more often used as a theatrical threat, in the same way that people accuse each other of treason whenever they disagree.
