Armed conflict often results in the large-scale exodus of refugees into politically and economically fragile neighboring states. The burdens on asylum countries can be extreme, and may only be partly offset by the arrival of international aid and protection resources. Moreover, difficulties inherent in the provision of asylum have been exacerbated in recent years by the increasing disinclination of the wealthier countries that fund the United Nations High Commissioner for Refugees (UNHCR) and most other assistance agencies to meet the real costs of protection. In such circumstances, it is unsurprising that as conflicts wind down, host countries ordinarily seek to bring refugee status to an end, and to commence repatriations to the country of origin.
Hathaway, James C. "The Right of States to Repatriate Former Refugees." Ohio St. J. Disp. Resol. 20, no. 1 (2005): 175-216.