[Alebe Linhares Mesquita and Vivian Daniele Rocha Gabriel] This Policy Brief aims to provide a concise analysis of the international investment dispute involving Philip Morris subsidiaries and the Republic of Uruguay. It depicts the main legal and political background that preceded the case, analyzes the decision reached by the arbitral tribunal, and assesses the award’s major regulatory and policy implications. It intends to contribute to the discussions on how and to what extent States can adopt tobacco control measures without violating their international obligations to protect the investment and intellectual property of tobacco companies.