Widespread ethnic cleansing accompanied the war in Bosnia and Herzegovina (1992–95), as large numbers of Bosnian Muslims (Bosniaks) and Bosnian Croats were forced to flee their homes and were expelled by Bosnian Serbs; some Bosnian Croats also carried out similar campaign against Bosniaks and Serbs. Also, Bosnian Muslims conducted similar acts against Croats in Central Bosnia and against Serbs in the Operation Sana
Beginning in 1991, political upheavals in the Balkans displaced about 2,700,000 people by mid-1992, of which over 700,000 of them sought asylum in other European countries.
The methods used during the Bosnian ethnic cleansing campaigns included "murder, torture, arbitrary arrest and detention, extra-judicial executions, rape and sexual assaults, confinement of civilian population in ghetto areas, forcible removal, displacement and deportation of civilian population, deliberate military attacks or threats of attacks on civilians and civilian areas, and wanton destruction of property".
Ethnic cleansing "is a purposeful policy designed by one ethnic or religious group to remove by violent and terror-inspiring means the civilian population of another ethnic or religious group from certain geographic areas. (Commission of Experts Established Pursuant to United Nations Security Council Resolution 780)".
An earlier draft by the Commission of Experts described ethnic cleansing as "the planned deliberate removal from a specific territory, persons of a particular ethnic group, by force or intimidation, in order to render that area ethnically homogenous." which it based on "the many reports describing the policy and practices conducted in the former Yugoslavia, 'ethnic cleansing' has been carried out by means of murder, torture, arbitrary arrest and detention, extra-judicial executions, rape and sexual assaults, confinement of civilian population in ghetto areas, forcible removal, displacement and deportation of civilian population, deliberate military attacks or threats of attacks on civilians and civilian areas, and wanton destruction of property. Those practices constitute crimes against humanity and can be assimilated to specific war crimes. Furthermore, such acts could also fall within the meaning of the Genocide Convention".