However, despite the fact that Kowalewski had contacts with numerous politicians of Hungary, Romania and Italy willing to change sides, the situation changed after the Casablanca Conference of 1943, when the Allies demanded the unconditional surrender of the Axis. The situation further deteriorated after the Tehran Conference, when it became clear that Hungary and Romania would fall under Soviet domination anyway and that the plan for a second front in the Balkans, which would allow the Hungarians and Romanians to break with Nazi Germany was finally dismissed. According to recent research by a Polish-British joint history commission for investigation of Polish World War II intelligence service, at the latter conference the Soviets demanded that Kowalewski be withdrawn from his post to England.