China's view on the sanctity of state sovereignty has slowly but inexorably been transformed, and the country has found it difficult to continue to adhere to the principles of non-interference and non-intervention with the same degree of rigour as during the Cold War era. This special section will explore what the principles mean to China today; why and how Beijing has become active in peacebuilding and conflict mediation; and what implication China's approach to the principles has for its position in the global liberal order. This article sets the scene by firstly demonstrating that defining the principles has always been a political act, and secondly offering new discussions about how China's expanding economic power forced the country to...