 The signers were Hrvoje Šarinić, the former Prime Minister of the Government of Croatia and Milan Milanović, a local Serb politician representing the self-proclaimed Republic of Serbian Krajina (RSK), under instructions from the authorities of the Federal Republic of Yugoslavia.The witnesses were Peter Galbraith, the ambassador of the United States to Croatia at the time, and Thorvald Stoltenberg, the United Nations intermediary.The territory of Eastern Slavonia, Baranja and Western Sirmium had previously been controlled by the RSK, and before that by the SAO Eastern Slavonia, Baranja and Western Syrmia.