Saddam's politics was the politics of the thug, of violence from the outset of his reign. Realism suggests that some people are not going to be tractable in response to purely peaceable overtures. Indeed, it certainly appears that some individuals, including notably Saddam Hussein, will cheerfully help themselves to a yard for every inch offered by well-meaning peacemakers. When we are dealing with customers as tough as that, there is no alternative to being tough ourselves.
The essential act of war is destruction, not necessarily of human lives, but of the products of human labour. War is a way of shattering to pieces, or pouring into the stratosphere, or sinking in the depths of the sea, materials which might otherwise be used to make the masses too comfortable, and hence, in the long run, too intelligent.