>>8782471yes my overlord, the cleanest way to kill all the filthy humans causing minimal damage to the enviroment and of course, quickly, is drop large iron asteroids in their oceans, close to their shores. the asteroids would cause tidal waves so great that their cities would be destroied within minutes. the simultaneos deployiment of asteroids would cause the tidal waves to spread and re-inforce themselves, hitting the shores again and again. once the shores are cleaned from the filthy humans, we can stabilish ourselves at them. human trade and its very industrial capabilities depends on trade crossing their oceans, by plane or boat. controling the shores we can deny the air space to them and use the costal areas to move our forces. after that we shall built rail guns to re-use the iron minerals of the asteroids as kinetic projectiles and bomb the inner cities with them. following the bombing we shall deploy micro robots carring a multitude of human diseases, the ones that do not affect other life forms on the planet. with their industrial capabilities destroied, under bombing and afflicted by several diseases, we can kill up to 65% of them in the first two to three weeks, leaving the rest to asault troops.
i only wait your orders, supreme overlord.