I honestly think Sloan is there to protect the Federation. He's doing what he believes is right. His whole speech about people being able to sleep at night seemed convincing. I don't think he's there to perpetuate his own power base. We can see when we are in his brain how much he sacrificed in his life
Exactly. And...if you look carefully in the final scene of "Inter Arna...", when Sloan gives the "sleep at night" speech...he actually looks a little sad.
It's like he's thinking, "I envy you, Doctor...because you can't comprehend the evils I have to fight...nor can you begin to understand all that I've sacrificed for what I'm doing...."