Is it possible Sylvanas and the Forsaken would be successful in conquering the entire Eastern Kingdoms down the road?
Say a decade has passed since the events of Cata and Sylvanas has had time to build a massive Forsaken army with the aid of her Val'kyr's.
Deciding her Forsaken need more living space combined with her hatred for the Alliance she decide's it's time to launch an all out assault.
During this time she has also been able to obtain "ballistic plague missiles" or bombs with the aid of Goblin technology.
Her first move is to launch several of these plague missiles/bombs into the heart of Stormwind, which ends up killing thousands.
After this she sends her navy and air force to attack a severly weakened Stormwind.
Also everyone slaughtered by the Forsaken is then resurrected by the Val'kyr as a new recruit of Sylvanas's army.
Once Stormwind falls she uses the tram to penetrate Ironforge.
Also a possibly with the aid of her necromancer's she is able to add undead dragon's to her army from corpses in Northend or Blade's Edge Mountains, which would be perfect for dropping plague bombs.
Would the Alliance be able to recover from such a devastating attack and emerge victorious or would they be doomed as the Eastern Kingdom's fall under complete control by Sylvanas and her Forsaken?