Este artigo discute como processos de securitizacao, em especial no que se refere a tematica do meio ambiente, se desenvolvem de maneira parcial e limitada tendo em vista as articulacoes de poder e status na arquitetura do sistema internacional. Para tanto, leva-se em consideracao o corpo teorico desenvolvido no contexto dos anos 1990, com a evolucao dos Estudos de Seguranca Internacional. Ja no campo pratico, ha que se considerar que, nas ultimas decadas, diversos Estados estiveram envolvidos em uma maior dinâmica de protecao e resolucao de problemas ambientais que afetam seus cidadaos e seus territorios, fazendo uso de conceitos como Seguranca Humana e Responsabilidade de Proteger a fim de justificar acoes politicas. No entanto, as novas responsabilidades imputadas a ‘comunidade internacional’ nao alcancaram o grau de universalidade que os conceitos per se pressupoem. Nesse sentido, a presente discussao busca evidenciar que, em um cenario semelhante de desastres ambientais, os Estados “frageis” e os Estados “falidos” costumam sofrer sancoes substantivas das Nacoes Unidas, incluindo intervencoes humanitarias, em contraposicao a inercia relativa aos Estados que apresentam recursos de poder no sistema internacional. As conclusoes corroboram a chamada “harmonia de interesses”, termo discutido por Edward Carr ha mais de 70 anos, e que continua sendo aplicada em boa parte da evolucao normativa internacional pelas grandes potencias sistemicas. Palavras-chave: Securitizacao; Meio Ambiente; Seguranca Humana; Responsabilidade de Proteger. _________________________________________________________________________________ Securitization of the environment: human security and responsibility to protect for everyone? This article discusses how securitization processes (especially with regard to environmental issues) are developed in a partial and limited way according to power and status articulations embedded in the architecture of the international system. For this, the theoretical body developed in the context of the 1990s, with the evolution of the International Security Studies, is taken into account. In practice, it has to be considered that, in the last decades, several States have been involved in a greater dynamic of protection and resolution of environmental problems that affect their citizens and their territories, making use of concepts such as Human Security and Responsibility to Protect in order to justify political actions. However, the new responsibilities imputed to the ’international community’ have not reached the degree of universality that those concepts presuppose. In this sense, the present discussion shows that, in a similar scenario of environmental disasters, fragile states and failed states often suffer substantive sanctions from the United Nations, including humanitarian interventions, as opposed to the inertia concerning powerful states in the international system. The conclusions corroborate the so-called “harmony of interests”, a term discussed by Edward Carr more than 70 years ago, and which continues to be applied in much of international normative evolution by the great systemic power politics. Keywords: Securitization; Environment; Human security; Responsibility to Protect.