Post–Cold War diplomacy has been a diplomacy of globalisation, building on multilateralism and cooperation. The recent questioning of globalisation has led to the questioning of diplomacy, which seems to have been dealt the final blow by Trump’s second election as President of the United States. His vision of a hyper–diplomatic realism — transactional, disruptive, based on force and serving the sole interests of America — clashes with the project of a new diplomacy that many actors in the international community are calling for. But what is this new diplomacy? What are its strengths and challenges? In this dossier, professors and researchers from the Institute provide contrasting analyses of the opportunities that a new diplomacy could bring to trade, inclusiveness, the United Nations and International Geneva, not forgetting the impact of new media and AI.