Milošević's trial at the ICTY revealed numerous declassified documents of Belgrade's involvement in the wars in Croatia and Bosnia. Evidence introduced at trial showed exactly how Serbia and the Federal Republic of Yugoslavia financed the war, that they provided weapons and material support to Bosnian and Croatian Serbs, and demonstrated the administrative and personnel structures set up to support the Bosnian Serb and Croatian Serb armies. It was established that Belgrade, through the federal government, financed more than 90 percent of the Krajina budget in 1993; that the Supreme Defense Council decided to hide aid to Republika Srpska and Krajina from the public; that the National Bank of Krajina operated as a branch office of the National Bank of Yugoslavia; and that by March 1994 FR Yugoslavia, Krajina, and Republika Srpska used a single currency. Numerous documents demonstrated that branches of the Krajina Public Accountancy Service were incorporated into Serbia's accountancy system in May 1991, and that the financing of Krajina and Republika Srpska caused hyperinflation in FR Yugoslavia. The trial revealed that the JNA, the Serbian Ministry of Interior, and other entities (including Serb civilian groups and police) armed Serb civilians and local territorial defense groups in the RSK before the conflict escalated.