The Cham issue is an issue which has been raised by Albania since the 1990s over the repatriation of the Cham Albanians, who were expelled from the Greek region of Epirus between 1944 and 1945, at the end of World War II, citing the collaboration of some of their number with the Nazis. While Albania presses for the issue to be re-opened, Greece considers the matter closed. However, it was agreed to create a bilateral commission, only about the property issue, as a technical problem.