The collapse of the communist regime in Albania in 1990–1991 triggered a massive migration of Albanian citizens to Greece, which included many members of the Greek minority. Since the end of the Cold War, many Greeks in Northern Epirus are re-discovering their Greek heritage thanks to the opening of Greek schools in the region, while Cham Albanians have called for compensation for their lost property. In the post-Cold War era, relations have continued to improve though tensions remain over the availability of education in the Greek language outside the official minority zone, the minority's property rights, and occasional violent incidents targeting members of the Greek minority.