This book provides a developing country perspective on the internationalization of science and the role of Science, Technology and Innovation Diplomacy (STID) in leveraging scientific cooperation for sustainable development. In articles by individuals from government departments and academic & research institutions in nine developing countries, it provides a conceptual understanding of the subject and reveals the prevailing perceptions on its praxis/practices. The articles highlight the significance of international cooperation at bilateral, regional and multilateral levels and the need for strengthening the role of STID in foreign policy and strategies of governments.