More geopolitical intrigue.
As the genius Australian doctor works on Khrest the Arkonide, the attack on the Third Power and the Stardust continues through the full NBC. As Thora easily stopped all nuclear fission attacks from the moon, a massive conventional rocket barrage continues for weeks, as a form of psychological warfare, if nothing else. Pretty loud, in other words. The world military and political leaders are still not happy with Rhodan's destabilising influence, or the possibility that he is now a great power.
All the while, various sneaky spy types are working on a biological attack that can be carried over frequencies that will penetrate the radiant dome, as well as working on a social engineering angle.
However, some of the top espionage agents, from the different powers, agree with Rhodan, and when they get to meet him face to face, realise that he knows what they were up to all along. So, they work out a subterfuge to attempt to further the Third Power's goals.
Khrest is treated successfully, but his daughter, Thora, still views humans as monkeys, basically. A big mistake, as new fusion weapon techology is being launched in an attack on the moon, and as Thora comes to collect Khrest, the attack is arriving at the moon, The decadent crew of the moonbase, having the equivalent of headphones on while reading a book, and not worrying about the chittering of monkeys from Earth. Needless to say, this is not good for their bodily integrity.