During Operation Junction City from February-May, 1967, U.S. forces had attempted to capture or destroy COSVN, the military and political headquarters for all NVA/VC forces operating in southern South Vietnam. It was reputed to have been located in Tay Ninh Province right next to the Cambodian border. Suppose during Junction City that they successfully encircled and captured, or at least destroyed COSVN. How would this have affected the overall outcome of the war?