I see that connection but question it's validity. The use of spies and cutting communication and finding various points etc. to me is the way of maybe a strategist pr maybe even tsun tsu himself but hardly a demonstration in analogy of his second post.
Sounds to me more like covert operations.
Well in the sense that aiki is subtle, I think covert operations still seems like it could fit the bill. "Internal" seems to describe a covert op whereas "external" would seem to describe overt/conventional ops.