The Purpose of the Study Is to Analyse the Role of the United Nations High Commissioner For Refugees (Unhcr) In Dealing With the Problem of Displacement of Masses Within the State I.E. Internally Displaced Persons (Idps). Idps Are Those People Who Have to Leave Their Permanent Residence Because of State Violence, Armed or Ethnic Conflict, Natural or Manmade Disasters, Generalised Violence and Violation of Human Rights. This Study Focuses on Those Idps, Who Have Been Displaced from Their Residence As a Result of Violence Inflicted on Them By the State. Thus the Study Would Not Include Natural or Manmade Disasters As a Cause of Displacement. Thus, In Terms of Cause, State Violence Is Taken As the Primary Variable. Unhcr Had to Expand Its Policy and Role With the Idps In Last Two Decades Because of the Increasing Number of Idps In World. Unhcr Reviewed Its Policies on the Basic Assumption That Humanitarian Organisations Must Work Together to Address the Needs of the Internally Displaced, Thus It Is Working With the Collaboration Many Government and Non-Government Agencies In Concern States, Who Are Able and Willing to Assist Idps. This Study Is an Attempt to Analyse In the Work Done By Unhcr For the Idps In the Following Cases Russia, Sri Lanka and Sudan. These Cases Represent the Problems of Idps – Caused Preliminary By States Violence – In Different Geographical Locations.