This chapter surveys the philosophically oriented literature analyzing the duties of states to climate migrants. More specifically, it discusses the responses that have been given to three questions: (1) What is the ethical basis on which countries are obligated to assist climate migrants from other states? (2) What is the scope of the rights that climate migrants enjoy to resettle elsewhere, in particular is the right an individual or a collective right to resettle? And (3) how should obligations to climate migrants be allocated among countries? The chapter concludes by emphasizing that the existing literature is focused on the obligations owed to, and the rights enjoyed by, migrants from the small island states that are existentially threatened by climate change. The focus of the literature should be broadened to consider the responsibilities that states owe to migrants in other situations.