It's essentially being agreed here that the LC, FWL and DC will be allowed to keep parts of the RWR. The SLDF is still large enough to enforce limits to that, and more importantly there's the political will to enforce it. Even if Kurita, Marik and Steiner unite opposing it, with either Liao as Regent (breaking ties) or adding Kerensky gives the other Lords a majority in the Council.
As for the Outworlds, Clay is proposing a diplomatic approach. Those worlds are already loyal to the Star League over the OWA so it's feasible that Allyce Avellar (legendarily the most naïve person ever to rule the Alliance) will agree. And if she doesn't, what's she going to do? Launch a rebellion and kick the SLDF out of her realm?
