Sazan Island
In 1913, after the end of the First Balkan War, lands of Northern Epirus were ceded to Greece, but Italy challenged the decision and in the Treaty of London the region was given to the newly created Albania. The local Greek population was enraged and created the Autonomous Republic of Northern Epirus, before it was reluctantly ceded to Albania, with peace assured by Italian peacekeeping force until 1919. Italy rejected the decision because it didn't want Greece to control both sides of the Straits of Corfu. In addition, although Sazan Island was ceded to Greece in 1864 as part of the Diapontia Islands, Greece ceded the island to the newly independent Albania in 1914 after the pressure of Italy, and since Greece didn't want to risk a war with Italy. Italy took possession of the island in 1920 and kept it through World War II.