At the end of this year, nearly 200 nations hope to negotiate a 15-year agreement that will foster change towards a sustainable low-carbon economy and establish obligations for all nations. Previously reluctant nations have already offered ambitious reduction targets and the European Union continues to be the most daring actor. Business will play a key role in the implementation. This will be an opportunity for strategic actors to voice their views on possible impacts over free trade agreements, among which the Mercosur-EU FTA. Old attitudes, barriers and reservations will have to be revisited in order to look for win-win scenarios.