"The Emperor is...
"Anathema to Sirenna," she says, after quite some consideration. "A believer in the philosophy of his freedom to do whatever he wants, to everyone else.
"And, yes, that is what a galaxy is.
"As for how it's held together...
"Well, there is the holonet. Communication between stars fast enough for real-time conversation. But if you ask how the Empire is held together, the answer is that it isn't. It's the Sith that are held together by the Emperor, and the Dark Council, and their individual fiefs are held together mostly by threat of those planets' resident Sith.
"Some are smart enough to realize that making people want you to rule works better in the long term. Many simply do not care.
"Imperial politics is such a fractious mess it's a wonder the war hasn't collapsed from it. Assassinating your rivals is commonplace. I hold my position because I killed the person who held it - I will ask you to believe me that he will not be missed, because I do not have it in me to speak on the matter - and promotion-by-murder is not unknown to happen in the conventional forces, albeit with much greater rarity than the frequency at which the average Sith tries. Not to mention the state of the Academy itself, where new Sith are trained amongst the haunted tombs of Sith older than the Empire. It boasts something like a 33% survival rate."
"...The Republic is led by their Chancellor, who is elected by their Senate, whose Senators are mostly appointed with all the avenues for corruption that come from that, not to mention the mess that legacy has made of the apportionment of Senators. Individual planets have their own governments, generally, no matter who's sitting atop them.
"As for the Force...
"You should probably ask a Jedi. As much as I am prone to thinking - not an entirely desirable trait, here, you can imagine - they have had far more time to spend, and far more peace and quiet," a hint of ingrained distaste at 'peace' that is pushed back against, but only somewhat, as if she's not entirely sure of her feelings on this subject, "to contemplate its nature in.
"That said, I did, once, pass myself for a Jedi Knight. It was a pleasant vacation, in all honesty. So I can tell you some of what I've heard.
"The Force is said to permeate everything, to tie the universe together. I'm not entirely sure of the truth of this, given some of the ancient myths, and, lately, your existence, because you look to me as if you are but air to my sense of the Force, but it's true enough that I feel comfortable saying it.
"The Force allows one to do wondrous things, if one has the mind and skill to accomplish them - but also terrible ones. It is shaped by Jedi and Sith alike.
"The most common uses are for war, because of course they are," a weariness she does not hide, "though the Jedi are known to have capable healers. The Sith... Alchemy could be used to heal. It isn't, outside of what little I dare practice lest I be asked to make monsters, but it could be.
"A competent Force-Sensitive is capable of using the Force to react to threats before they materialize, exerting telekinetic, ha, force, reading the emotions of others to some degree as well as getting some amount of - feedback as to their underlying nature, given time - and, I must unfortunately mention, using that same receptivity to project - both communicatively, though that usually to only people they have a Force bond with, and to influence. Even the Jedi will use the Mind Trick, though I personally find it abhorrent enough that I refuse to use it unless I would be equally willing to kill. Or, of course, with consent, though the need for that is quite rare. It's one of those dreadful ironies that apparently I'm quite good at it."