An essay on political theory applied to climate policy: an invitation to create a new climate party, beyond acronyms and borders... Acting on the climate crisis does not imply diluting our ideas or our horizons; quite the opposite. The task at hand is to build a new regulatory objective--the ecological viability of our species and the other species with which we share the Earth--and to transform it into the hallmark of a position of a party opposed to its enemies: the fossil fascists, the climate deniers, and the moral nihilists. What are the effective organizational forms for building a policy that is up to date? Only by founding a true climate party will we have any chance of continuing to advance in this interregnum without losing our way.