As the UN High Commissioner for Refugees (UNHCR) has recorded, between 1990 and 2010 there was a fairly consistent level of global forced displacement of between 30-50 million people per annum. However, the past 10 years have seen a significant increase in all forms of forced displacement, defined by UNHCR as displacement resulting from “persecution, conflict, violence, human rights violations or events seriously disturbing public order.”

Wars, inter-state conflicts and climate breakdown result in the mass movement of peoples. According to the World Economic Forum, wars, violence or persecution forced 11 million people to flee their homes throughout 2019, mostly from low or middle-income countries, nearly double the figure for 2010 and creating a global population of almost 80 million displaced. The United Nations High Commissioner for Refugees reported that more than one per cent of humanity, that is one out of every 96 people in the world, was displaced in 2020, with more and more unable to return home.