In the 21st century, new kinds of challenges resulting from interdependence among states and globalisation have had a determining impact of the conduct of diplomacy. Diplomacy has become multifaceted, pluri-directional, volatile and intensive, due to the increased complexity in terms of actors, dialogues subjects, modes of communication, and plurality of objectives. Ambassador Kishan S. Rana, Senior Fellow at DiploFoundation, examines all such factors in the ‘21st Century Diplomacy‘ book, to provide the definitive guide to diplomacy as it is practiced today.