Bolivian president Evo Morales decided to break off all dialogue with Chile on the maritime issue, opting instead to pursue the issue in litigation in international courts. He thus broke an OAS resolution in 2012 wherein the majority of member states encouraged Bolivia to pursue the issue via bilateral dialogue with Chile. Chilean president Sebastian Piñera pleaded with Evo Morales to continue with the dialogue but to no avail. The Bolivian government followed through with its determination to file a case with the International Court of Justice on 24 April 2013. Surprisingly, the case did not challenge the border treaties signed by both countries which Evo Morales has always been against. The basis of the case stemmed from two bilateral negotiations in the 1970s and 1950s where a sovereign route to the Pacific was allegedly promised by Chile but never eventuated. Bolivia argues "the rights of expectations" for their case which is a commercial law term that had never been used in the ICJ. The memorials process ended in early 2015. In October 2018, the International Court of Justice issued a final and binding decision that Chile was not obliged to negotiate granting Bolivia sea access.