“…Moreover, and unlike charity, it is a relationship among formal equals that is based on interdependence and a certain element of mutuality, even if not strict reciprocity. 16 The ongoing progress made by international cooperation in disaster response, the author suggests, are increasingly based on such solidarity, which indeed increasingly shapes the area. Apart from the theoretical application of international cooperation and solidarity, the author also focuses on the application of solidarity in practice, which is examined through the R2P doctrine (which is also analysed in Part II) and the European Union legal order.…”