User blog comment:Cubuff37/My Official Review Of Call of Duty: Advanced Warfare/@comment-1263839-20150131213136/@comment-3967954-20150203223252

Also, Irons wasn't trying to have everyone outside of Atlas killed; he developed Manticore to deploy in combat situations, so his own troops wouldn't get hurt but the enemies would. Nowhere does the game allude to killing civilians with Manticore. He was crazy, but he wasn't genocidal.

He wanted to topple the UN and have the entire world benefit under Atla, just like they did in Detroit; in order to do that, there would have to be civilians around.