sda5691
Mongoose
<Note to self: caffeine before commentary>OK, where are we getting 'Lutke neutered the Kafer' from?
2320 has Lutke dropping deadfall ordinance on a Kafer colony that also had human prisoners on it, but it wasn't one of the major worlds in the GV Loop.
The paradrenaline inhibitor was developed by the Outward Visions Pentapod sect and delivered to the French. The decision to drop a bioweapon on both worlds of the Kafer home system was a joint decision by Emperor Ruffin and the ESA heads of state [probably just Germany, the UK, and France]. Even the Fleets didn't know about it until they got their orders [likely hand delivered by courier].
But when the Terran Reserve Fleet drops the bioweapon at GV, Lutke was off doing his 'Bull Halsey' thing laying waste to Triumphant Destiny's worlds.
Okay, I miswrote the "neutering" comment, having forgot "..the Kaefer home worlds." This doesn't apply to the remainder of Kaefer Space, certainly, which is why Lutke went ballistic on those Kaefer worlds closer to Human Space. The threat isn't completely gone, nor will it ever truly be until either one species or the other is eradicated or evolve into something higher. But there's less chance of a series of "nth Kaefer Wars" with the paradenaline inhibitor ready to deploy.
Of course, strategic planners may ask themselves if the Pentapods have something similar they can drop on us.