I remember my mom dressed like Janis Joplin.
To her audience Janis Joplin has remained a symbol artifact and reminder of late Sixties youth culture. Her popularity never derived from her musical ability but from her capacity to link her fantasies of freedom and immortality with ours.
Winning in Afghanistan is having a country that is stable enough to ensure that there is no safe haven for Al Qaida or for a militant Taliban that welcomes Al Qaida. That's really the measure of success for the United States.