Contained.
We are not concerned with KB. The only planet the United Confederation is concerned about is GR, it is written in our charter. The United Confederation has not had a single branch on another world. We have not made plans on another world. We simply do not exist on any other world. To try and achieve "retribution" against the United Confederation on any world other than GR is to be fighting the shadows of that which is not there. You are not fighting a "just crusade" by attacking people who are in the United Confederation on GR, because they are not United Confederation members anywhere else. They are individuals. We do not unjustly burden them with achieving any goals of the United Confederation because the United Confederation has no goals outside GR.
I wonder, who do you plan on using "UC" as an excuse to attack? Are you trying to achieve your vendetta through indirect means?