Tulluis: How do I see the future after this stupid war? It is very simple.
Skyrim will be in a period of peace and rebuilding but we'll be done with it. 
Getting rid of the Thalmor? Right now there's nothing we can do. Our hands are tied by the White-Gold Concordat. We have to do what the Thalmor asks of us, including giving up Talos. But we have our own secret intelligence service. Though for the moment it hasn't done much.
As for Ulfric, I think he's a fool and an idiot! He doesn't realise his mistake! 
And Skyrim belongs to the Empire! And must stay in the Empire!
Well I've answered your questions. Now, I've got work to do. Come back to me after you've made up your mind.

Ulfric: It is true, I killed the High King Torygg with the thu'um.
I used to like this man until he agreed to the terms of the infamous White-Gold Concordat. 
He had a choice, there's always a solution than accepting the compromise of the damned Thalmor elves.
As for the War, I intend to drive the Imperials out of the country.
When I say Imperials, I mean the Legion and the Empire's loyalists. Skyrim belongs to the Nords!
As for getting rid of the Thalmor? That's easy.
I intend to give Skyrim back its independence by leaving the Empire.
Tulluis' method is stupid and obsolete! The Empire is weak and plagued by the Thalmor! The Thalmor controls everything! His method is doomed to failure!

Ulfric: Of course.
If Skyrim leaves the Empire, the country will no longer be part of it. The White-Gold Concordat will become null and void and the Thalmor will have no choice but to leave.
This is what is happening in Martelfell, the redguards have understood that by leaving the Empire, they will be able to get rid of the treaty.

I'll have a word with him about that.
I'd join his side if he treated the dunmers better.
And as I said, I've been thinking about it a lot.
Tulluis has the same goal, to get rid of the Thalmor. But he confessed, his methods are not working. He's powerless.
Staying in the Empire is not the best solution, it's allowing the Thalmor to continue their SAP work.
Ulfric is the key, he has the key to the solution to this problem.
He intends to give Skyrim back its independence by leaving the Empire, which will get rid of those damned elves. I hope so.