"This one" was lost by May of 2003 when the Bush admin tried to secure a nation of 30 million hostile people with less than a Divisional strength in combat troops.
Everything after was damage control, and never particularly successful damage control at that.
What's going on now is just more of the same - make a token effort, pretend you're committed, smile for the cameras.
Bush blew it, then Obama blew what he inherited.
Two abject national defense failures.