Board Thread:Lore Discussion/@comment-26213507-20150715194939/@comment-1600847-20150831135606

Blademaster Jauffre wrote: Totally not true, that's the biggest lie I have ever heard. Once you get to the quest where you have to trap Ohdaviig in Dragonsreach for the Main Quest, unless you've completed the Battle Whiterun Civil War quest Balgruuf will refuse to help you. You then have to complete "Season Unending", and negotiate a truce between Imperial and Stormcloaks, to be able to finish the Main Quest.