This chapter – the concluding substantive chapter of the book – asks how a concern with ecosystem resilience might ultimately come to inform the way political communities approach the relationship between climate change and security. If ecological security constitutes the most progressive account of climate security, encouraging approaches that emphasize the rights and needs of the most vulnerable in the face of climate change, how might we get there? The chapter draws on the political sociology of Pierre Bourdieu in developing an account of political possibility. It then locates immanent possibilities for movement towards ecological security in existing principles and practices (from the precautionary principle to accounts of geoengineering governance), before acknowledging a role for considering alternative and novel sets of institutional arrangements and practices to advance ecological security. In the process, it makes the case for recognizing and facilitating progressive change, even if such change does not wholly align with the principles of the ecological security discourse. In this context, the perfect should not be the enemy of the good.