[quote=Akihisa Yoshii]
Erza's eyes widen, and she clenches her fists. "...I see...""DAMMIT!" There's a thump and Erza looks over at Natsu, who's fallen to his hands and knees, the thump from him punching the ground. She frowns, sadness evident on her face. "Natsu...""Why?! Why is this happening?!" He cries, punching the ground once more. He looks up, tears in his eyes. "WE WEREN'T BOTHERING ANYBODY, WHO THE HELL GAVE THEM THE RIGHT TO ATTACK OUR PLANET?!"
[/quote]

"They are a war mongering species. After they failed to manipulate you against the normal clone empire, they labled you enemies, and as such moved in. Although, they aren't the ones you need to worry about." Darkside says.