This paper analyses global debates on soft power and its implications for small states in international relations. It primarily focuses on theoretical debates about the soft power of small states. It examines the conceptual development of soft power and how it relates to small states using a qualitative approach. It has observed small states from quantitative and qualitative definitions and found them to have divergent priorities with distinct characteristics. Furthermore, a soft power taxonomy was used to observe soft power resources, instruments, receptions, and outcomes. Methodologically, this paper follows the qualitative literature review approach, using a systematic framework. Finally, the paper examines the ontological position of soft power in international relations theory, providing a unique proposition that stands out from realism, liberalism, and constructivism. In conclusion, the paper reviews the opportunities, challenges, and practices of soft power in the foreign affairs of small states, drawing on theoretical and philosophical lenses to develop persuasive arguments.