And I guess that someone like Naruto would be more than happy to let someone try to take over the world and bring war.
Defending something you love brings emotional involvement. When Naruto and Gaara fought, they had only just met eachother. Although they were similar, Naruto had friends who he was willing to die for.
If AL appraoched Naruto and said "Yo, we're taking over Konoha", Naruto would fight him on the spot with all he had in him. He would cry and be confident and determined. I think that would be pretty emotional.