Czechoslovak government-in-exile
During the German occupation of Czechoslovakia, especially after the reprisals for the assassination of Reinhard Heydrich, most of the Czech resistance groups demanded that the "German problem" be solved by transfer/expulsion. These demands were adopted by the Czechoslovak government-in-exile, which sought the support of the Allies for this proposal, beginning in 1943. The final agreement for the transfer of the Germans was not reached until the Potsdam Conference.