Originally Posted by dark_b
i think the reason he says kill them all is because in the last 3 movies we saw that if you dont kill a decepticon that he can still repair himself and come back. so the only way to stop them is to kill them all.
I think every time they actually went into combat in the past movies, their opponent's head was turned to scrap. They know they have only one choice during war. We know it too. We don't need Prime telling them "Kill them all."