 With the invasion of Yugoslavia in April 1941 by the Nazis and their Allies, Bosnia and Herzegovina came under the control of the Independent State of Croatia, a Nazi puppet-state.The Independent State of Croatia was headed by the notoriously anti-Semitic Ustaše, and they wasted little time in persecuting non-Croats such as Serbs, Jews and Romani people.On 22 July 1941, Mile Budaka senior Minister in the Croatian government and one of the chief ideologists of the Ustaše movementdeclared that the goal of the Ustaše was the extermination of ""foreign elements"" from the Independent State of Croatia.