Daniel Warner and Georg von Kalckreuth
The term “refugee crisis” is used throughout the literature to refer to situations where large numbers of refugees or displaced persons more generally are present, whereas “humanitarian crisis” refers to situations where the lives, health, safety or well-being of a large number of people are at substantial risk. The term “complex emergency” is defined as “a humanitarian crisis typically characterized by extensive violence and loss of life, massive displacements of people, widespread damage to societies and economies, and hindrance of humanitarian assistance by security risks and political and military constraints.” A typical complex emergency consists of one or more humanitarian and refugee crises, regardless of their actual causes, and necessitates an international and United Nations system-wide response because of its complexity. Humanitarian and refugee crises have often generated international response efforts that were intended to help affected individuals, alleviate their suffering, and restore their situation from the plight of crisis to some level of normality. In addition to the UN and its specialized agencies, international responses bring together a large and diverse set of actors such as the International Committee of the Red Cross and its national societies, national and international nongovernmental organizations, and the governments of third states. Their responses have drawn scholarly interest, especially after World War II. However, the literature on international responses to humanitarian and refugee crises does not offer a comprehensive and exhaustive scholarly treatment of the issue. This is an obvious gap that needs to be addressed in future research.