evidence: The Island of Vukovar is a disputed island on the river Danube located nearby the city of Vukovar, currently part of Eastern Croatia and having the most important fluvial harbour in the area. Since the end of the Cold War in 1991, the island has been the site of continuous territorial and border conflicts between the states of Serbia and Croatia, which have not seen an end yet. From the 1940’s and throughout the existence of the Socialist Federal Republic of Yugoslavia, the island of Vukovar belonged to and was administered by the Socialist Republic of Croatia. When, in 1991, Croatia declared its independence, the sovereignty over the borders of the island became ambiguous and a source of heated tensions. [...] - Casebook ICRC – Armed Conflicts in Former Yugoslavia: https://casebook.icrc.org/case-study/case-study-armed-conflicts-former-yugoslavia - Revolvy – Island of Vukovar: https://www.revolvy.com/topic/Island%20of%20Vukovar&item_type=topic - DBPedia – Island of Vukovar: http://dbpedia.org/page/Island_of_Vukovar - Pediaview – Island of Vukovar: https://pediaview.com/openpedia/Island_of_Vukovar