From the signing of the Treaties of Rome on 18 May 1941 until the Italian capitulation on 8 September 1943, the state was a territorial condominium of Germany and Italy. "Thus on 15 April 1941, Pavelić came to power, albeit a very limited power, in the new Ustasha state under the umbrella of German and Italian forces. On the same day German "Führer" Adolf Hitler and Italian "Duce" Benito Mussolini granted recognition to the Croatian state and declared that their governments would be glad to participate with the Croatian government in determining its frontiers." In its judgement in the Hostages Trial, the Nuremberg Military Tribunal concluded that NDH was not a sovereign state. According to the Tribunal, "Croatia was at all times here involved an occupied country".