The Vance plan (Croatian: Vanceov plan, Serbian: Vensov plan) was a peace plan negotiated by the former United States Secretary of State Cyrus Vance in November 1991 during the Croatian War of Independence. At that time, Vance was the Special Envoy of the Secretary-General of the United Nations; he was assisted by United States diplomat Herbert Okun during the negotiations. The plan was designed to implement a ceasefire, demilitarize parts of Croatia that were under the control of Croatian Serbs and the Yugoslav People's Army (JNA), allow the return of refugees, and create favourable conditions for negotiations on a permanent political settlement of the conflict resulting from the breakup of Yugoslavia.