I pulled out my copy of Action Stations and took a look. In the passages on Kilrah before the transfer on the Emporium takes place, Jukaga's father makes it clear that he doesn't like the decision to go to war "It is the wrong war, at the wrong time". He tells his son that the war is a ploy by the Emperor to drain the blood from the other clans, then have the First Fleet containing the Imperial blood and the Emperor's clan take the spoils of victory. He then convinces Jukaga not to go into battle.
After Jukaga leaves, the father grumbles more about the Emperor's power grab, then mentions "a plan within a plan which both drew him and yet caused him to rebel against basic instincts. And yet, if it worked, perhaps this insanity could be avoided." He then goes on to discuss how the war with the Confederation must, rather than the brute force method decided by the Emperor, be balanced by softening humanity through an exploitation of its 'weaknesses', such as its politics...which probably sounds familiar to anyone who's read Fleet Action.
Later on, there's a passage by Turner when discussing the document to Blucher. "Don't you see? It's a little game within a game for some Cat on the other side...Someone wanted to tip us off, but not necessarily betray their side either, so there's no plans. Maybe they want to derail the attack for their own purposes, or even feel that now is not the time."
I'd like to say I noticed that all along, but I didn't really make the connection between the two passages until just now. At any rate, either one of these passages convinces me it's Jukaga's father.