New in paperback. Hardcover was published in 2021. Contributions cover the way in which responsibility is theorized across different approaches in IR and relevant neighboring disciplines and demonstrate how responsibility matters in different policy fields of global governance. Chapters with an empirical focus zoom in on particular actor constellations of (emerging) states, international organizations, political movements, or corporations, or address how responsibility matters to structure the politics of global commons, such as oceans, resources or the Internet.