Once a fringe candidate, Paul shaping 2012 race

DES MOINES, Iowa — Ron Paul, once seen as a fringe can­di­date and a nui­sance to the estab­lish­ment, is shap­ing the 2012 Repub­li­can pri­mary by giv­ing voice to the party’s lib­er­tar­ian wing and reflect­ing frus­tra­tion with the United States’ inter­na­tional entanglements.