NOT WHILE I'M STILL BREATHING! :xD:
Imperials need to win, so that skyrim is strong and they can pwn aldmeri dominion later, I'm with Legate Rykke on that. :war:
But the Thalmor will order them not to and that will be that, unless they're going to go against the emperor himself

. It's also a question of leadership, and Ulfric is the best there to the point that the Thalmor want the war to continue, but they did not want Ulfric to win even if it meant the Empire winning. For Skyrim to be strong, it needs a leader who can fight for it.
FOR THE IMPERIUM! FOR THE EMPEROR!
Works for two games.
...and both are just as bad as the actual nominal antagonists in their universes (Chaos and the Thalmor)
I know that a civil war in Skyrim is just what the Thalmor want but I'd prefer to concentrate on stopping Alduin..
I'd rather stay out of the whole civil war thing..
It's possible to, although IIRC you have to negotiate a truce to get past a certain point in the main quest (very spoilery, so leaving it at that) if you haven't won the war for one side (I always win it for the Stormcloaks by then

).