Total Destruction is not Liberation.  Sorry, this is not a classic WWII battle.
Its simply the on-going successful 'business model' for the U.S., U.K., Russia, France, etc. their 'Arms Industries'.
They need perpetual war to continue to enjoy windfall profits.  So after 17 pointless years in the middle-east, the U.S. is pledged to invade, bomb, destroy for decades to come.  Its not personal, its just business.