If previous sectors acquired by negotiation:
My hands are tied, but maybe you have a chance to save this empire and set a path to a great future.
If at least one sector taken by force:
You will probably defeat me, and maybe I will die, yet I do not hold these fights against you. Instead, I ask you to continue and save this glorious empire I am dying for!
As much as I hate fighting against you, it is my duty.