I'm going to join in because this looks like a valid discussion, I have
read a novel that was set in World war II, which ended abruptly due to an
alien invasion (you could substitute Angels for aliens). neway, the Allied
and Axis were forced to work together to come up with a new weapon (this is
where Seele and Nerv come in), that's my humble opinion anyway.
Jiro Maeda
Godmaster of Neo Nemesis
A hero is someone you can look up to 
without apology