The geological era of the Anthropocene is expected to trigger a paradigm shift across the natural and social sciences. Within International Relations (IR), the arrival of the planetary has generated various debates that range from questioning the very future of the discipline to proposals for how to fix IR. This article takes stock of different research perspectives from three disciplines, namely IR, Earth System Sciences and New Materialism/Posthumanism. With reference to these different perspectives, it examines the ways in which peace, conflict and security are related to the Anthropocene. This panoramic overview reveals also certain demarcations between the research approaches, disciplines and study fields, and aims to trigger future research on overcoming these boundaries of thought and push the research on Anthropocene thinking further.