This chapter surveys the existing international law governing climate change adaptation and disaster risk reduction. It examines key sources, including international climate change treaties and the diverse instruments of the emerging field of international disaster law. The chapter critically assesses the content and scope of obligations to adapt to climate change and reduce disaster risk and their implementation status at the global level. It concludes that these obligations are primarily programmatic and supported by detailed yet soft-law standards. Three main dimensions of the obligations are identified: adopting appropriate measures at the domestic level, contributing to international cooperation and support, and engaging in international reporting mechanisms. Despite some progress, the chapter highlights that implementation by States remains well below the level required to effectively address climate change risks. Subsequent chapters will explore how and to what extent human rights law can bridge these gaps.