Does Garlemald have enough for full out war?

[Alleo]

Certainly, the only Garlean who seemed to be able to understand Zenos's deeper motivations to any degree was his father, and Varis seemed to have his own reasons for giving Zenos free rein. Everyone else (fanatics like Asahi in particular) saw him as a brilliant warrior and strategist, a paragon of Garlean virtues.

My problem is that Zenos did not just stop with punishing the people of these two states but also his own men. He kills at least two Garlean of higher rank so I just find it strange that his father does not try to put a leash on him. This could lead to a rebellion of pureblood Garlean if they think that Varis does nothing to stop their family being killed randomly. I mean they can say that this was not common knowledge but still its bad that he left him there after he did that twice.