Georgia accuses the Abkhaz secessionists of having conducted a deliberate campaign of ethnic cleansing of up to 250,000 Georgians, a claim supported by the Organization for Security and Co-operation in Europe (OSCE; Budapest, Lisbon and Istanbul declaration). The UN Security Council has avoided the use of the term "ethnic cleansing" but has affirmed "the unacceptability of the demographic changes resulting from the conflict". On 15 May 2008, the United Nations General Assembly adopted a non-binding resolution recognising the right of all refugees (including victims of reported "ethnic cleansing") to return to Abkhazia and to retain or regain their property rights there. It "regretted" the attempts to alter pre-war demographic composition and called for the "rapid development of a timetable to ensure the prompt voluntary return of all refugees and internally displaced persons to their homes."