Then again, it can be cut short really quickly with a couple of mods, accidently destroyed the riverwood blacksmith with the DESTRUCTIBLE TERRAIN MOD, and the dragon grabbing frodnar and throwing him who knows where.
So do I
I know this is late and all, but remember that Frodnar is Ralof's nephew, a Stormcloak, and Dorthe is Hadvar's cousin.
Dorthe is Hadvar's cousin, an Imperial.
I'm sure by the time they are adults the war will be over.