Croatia–Serbia border dispute

The border between Croatia and Serbia in the area of the Danube is disputed, an important part of their broader diplomatic relations. The Croatia–Serbia border was first disputed during the times of Yugoslavia. While Serbia claims that the thalweg of the Danube valley and the centreline of the river represent the international border between the two countries, Croatia disagrees, claiming that the international border lies along the boundaries of the cadastral municipalities located along the river—departing from the course at several points along a 140-kilometre (87 mi) section. The cadastre-based boundary reflects the course of the Danube which existed in the 19th century, before anti-meandering and hydrotechnical engineering works altered its course. The area size of the territory in dispute is reported variously, up to 140 km2 (54 square miles).
The dispute first arose in 1947, but was left unresolved during the existence of the Socialist Federal Republic of Yugoslavia. After the breakup of Yugoslavia, the dispute would become a contentious issue. Particular prominence was given to the dispute at the time of Croatia's accession to the European Union. The dispute remains unresolved, and the line of control mostly corresponds to Serbia's claim.
Background
[edit]
In 1947, Vojvodina's Ministry of Agriculture sought assistance from both Serbia's and Croatia's Ministries of Forestry when authorities in Vukovar refused to hand over four river islands. After Croatia refused the request, the Serbian authorities turned to the federal government. The federal authorities advised resolving the matter through mutual agreement and said that Vojvodina's interpretation of the law on its borders—that the border runs along the thalweg of the Danube valley, i.e. along the river's midpoint—is erroneous because the law does not apply such wording.[1] In a letter dated 18 April 1947, Yugoslav authorities said that the disputed river islands were the territory of Vukovar district and that the territory could not be transferred to Vojvodina before the border was defined otherwise.[2]
By May 1947, authorities in Vojvodina noted that there was a dispute between them and the authorities in Croatia regarding the interpretation of the position of the border along the Danube, and that the federal authorities, who were asked to mediate in the dispute, supported the position of Croatia. At the same time, Vojvodina requested that Croatia return the territories on the right bank of the Danube that had previously been ceded to it (Varoš-Viza and Mala Siga).[3] While in the Yugoslav framework, the issue received little further attention as its resolution was discouraged by the federal authorities, and because the area involved had limited economic value, was uninhabited and frequently flooded.[4]
By 1948, Croatia and Serbia agreed on two modifications of the border—the village of Bapska was transferred to Croatia, while Jamena was turned over to Vojvodina. No further changes to the border were agreed upon.[5] A map of the area issued by the Yugoslav People's Army Military-Geographic Institute in 1967 depicts the border along the cadastre-based boundary, corresponding to the Croatian claim in the dispute.[6]
Territorial claims
[edit]The Croatian–Serbian border dispute involves competing claims regarding the border at several points along the Danube River valley shared by the two countries. The disputed areas lie along a 140-kilometre (87 mi) portion of the course,[7] out of 188-kilometre (117 mi) of the river course in the area.[8] In that area, the border is defined differently by the neighbouring countries—either as following the Danube, as Serbia claims, or the borders of cadastral municipalities having seat in either country, as Croatia claims.[9] The cadastre-based boundary also traces the former riverbed of the Danube, which was changed by meandering and hydraulic engineering works in the 19th century, after the cadastre was established.[10] The border dispute involves up to 140 square kilometres (54 square miles) of territory.[9] Other sources specify somewhat different figures, indicating a Croatian claim over 100 square kilometres (39 square miles) on the eastern bank of the river, in Bačka, while saying that the cadastre-based boundary leaves 10 to 30 square kilometres (3.9 to 11.6 square miles) of territory on the western bank of the Danube, in Baranja to Serbia.[11][12] Yet another estimate cites a total area of 100 square kilometres (39 square miles) in dispute, 90% of which is on the eastern bank of the Danube, controlled by Serbia.[13]
The bulk of the territory in dispute is near the town of Apatin,[12] while the Island of Šarengrad and the Island of Vukovar are cited as particularly contentious parts of the dispute. Other disputed areas are located near the town of Bačka Palanka,[11] and in the municipality of Sombor, at the tripoint of Croatia, Hungary, and Serbia.[14] Croatia claims that the cadastre-based boundary was adopted by the Đilas Commission, set up in 1945 to determine the borders between federal constituents of Yugoslavia, while Serbia claims that the same commission identified the boundary as the course of the Danube in 1945.[15] In 1991, the Arbitration Commission of the Peace Conference on Yugoslavia ruled that the border between federal units of Yugoslavia became inviolable international borders without referring to the location of any specific claim or line. Before the ruling, Serbia asserted that the borders were subject to change following the breakup of Yugoslavia and the independence of Croatia.[16] Since the Croatian War of Independence, the line of control coincides with the Serbian claim.[13]
21st century
[edit]
In early 2000, Croatia and Serbia established a commission tasked with determining the border, but in its first ten years it convened only once or twice.[17]
On 28 July 2002, a patrol boat of the Yugoslav Army fired warning shots at four boats carrying the prefect of Vukovar-Srijem County, the mayors of Vukovar and Bačka Palanka, and several civilians to Bačka Palanka. The incident occurred approximately 800 metres (2,600 feet) away from Šarengrad Island. Shots were also fired at a Croatian patrol boat which attempted to approach the same vessel. There were no casualties, but the passengers and crew of the civilian boat were arrested.[18] Four elderly individuals and four children were released immediately, while the rest were interviewed at a Yugoslav military barracks for two hours before being set free.[19] Yugoslav foreign minister Goran Svilanović expressed regret over the incident, but Croatian Prime Minister Ivica Račan stated that Croatia was not satisfied with the gesture.[20] The Serbian Army withdrew from the border in October 2006, turning control over to the Serbian police.[21]
In 2006, representatives of the city of Vukovar and the municipality of Bač, located on the bank opposite Vukovar, reached an agreement on use of Vukovar Island as a recreational facility and beach. The island is accessible to organised transport by boats sailing from Vukovar. No border controls were involved in the process.[22] By 2012, visits to the island reached 150,000 persons per year.[23]
The issue gained prominence in the disputing countries in 2010. Plans for construction of a port in Apatin, on a piece of territory claimed by Croatia, added fuel to the dispute.[24] After years of inactivity the commission met in Zagreb in April 2010, only to conclude that there was a difference of opinion on the matter.[14] Later that month, the Serbian Radical Party (SRS) deputies in the National Assembly proposed a resolution which required Serbian officials to resolve the dispute in compliance with the Serbian claim.[25] Months later, Radoslav Stojanović, a former legal representative of Serbia and Montenegro in the Bosnian Genocide Case and former ambassador to the Netherlands,[26] likened the dispute to the Croatia–Slovenia border dispute in the Gulf of Piran. Stojanović said that the position held by Croatia in its dispute with Slovenia was favourable to Serbia and warned that Serbia might be in a disadvantageous position if Croatia joined the European Union (EU) before Serbia—which would allow it to impose its conditions to the process of accession of Serbia to the EU.[14]
By 2011, Serbian diplomats requested the EU to pressure Croatia to resolve the dispute before Croatia's accession to the union for fear it might follow the Slovene example and stall Serbian accession similar to the impasse between Croatia and Slovenia over their border disputes and the subsequent blockade of the Croatian EU accession negotiation process. The EU denied the request.[27] Croatian President Ivo Josipović said that the dispute was the most contentious issue of Croatia–Serbia relations but added that it should not be difficult to resolve.[28] In 2012, Josipović stated that Croatia should not block Serbia's EU accession over the issue and suggested that the dispute should be resolved through arbitration,[29] which is considered an acceptable solution by both countries.[30] In 2014, the Croatian ambassador to Serbia reiterated Josipović's stance from 2012.[31] On the other hand, Zoran Milanović, the Prime Minister of Croatia, said that resolution of the border dispute would be Croatia's condition placed before Serbia in its EU accession negotiations.[32]
Micronational claims
[edit]In 2015, Czech politician Vít Jedlička proclaimed the micronation Liberland on Gornja Siga, a pocket of land left unclaimed by both Croatia and Serbia.[33][34] The Serbian Ministry of Foreign Affairs dismissed the "new state" as unimportant, later adding it did not impinge upon the Serbian border, which is delineated by the Danube River.[35] Four years later, in 2019, Pocket 3 on the west side of the Danube was similarly proclaimed to be the Free Republic of Verdis by Australian teenager Daniel Jackson.[36][37] After local Croatian authorities dismantled an early Verdis settlement, Jackson has governed "in exile" since 2023 and accused Croatia of illegally blockading his settlement.[38][39]
See also
[edit]Footnotes
[edit]- ↑ Klemenčić & Schofield 2001, pp. 22–23.
- ↑ Štambuk-Škalić 1995, pp. 325–326.
- ↑ Štambuk-Škalić 1995, pp. 327–329.
- ↑ Klemenčić & Schofield 2001, p. 22.
- ↑ Klemenčić & Schofield 2001, p. 16.
- ↑ Glas Slavonije & 22 March 2014.
- ↑ Klemenčić & Schofield 2001, pp. 16–17.
- ↑ DZS 2015, p. 49.
- 1 2 Balfour & Bašić 2010, p. 2.
- ↑ Klemenčić & Schofield 2001, p. 17.
- 1 2 Večernje novosti & 1 March 2012.
- 1 2 B92 & 29 March 2014.
- 1 2 Klemenčić & Schofield 2001, p. 19.
- 1 2 3 Večernji list & 13 June 2010.
- ↑ Klemenčić & Schofield 2001, pp. 17–19.
- ↑ Lukic 2010, p. 58.
- ↑ RFE & 24 July 2012.
- ↑ Slobodna Dalmacija & 27 July 2002 (a).
- ↑ Slobodna Dalmacija & 27 July 2002 (c).
- ↑ Slobodna Dalmacija & 27 July 2002 (b).
- ↑ Jutarnji list & 30 October 2006.
- ↑ B92 & 29 July 2006.
- ↑ Glas Slavonije & 15 July 2013.
- ↑ Politika & 19 January 2010.
- ↑ Večernji list & 22 April 2010.
- ↑ B92 & 31 August 2011.
- ↑ Jutarnji list & 31 January 2011.
- ↑ B92 & 21 February 2010.
- ↑ Novi list & 8 February 2012.
- ↑ BusinessWeek & 14 April 2010.
- ↑ B92 & 26 March 2014.
- ↑ Novi list & 21 March 2014.
- ↑ "Liberland". liberland.cz. Archived from the original on 15 April 2015. Retrieved 15 April 2015.
- ↑ Martínek, Jan (15 April 2015). "Člen Svobodných vyhlásil na území bývalé Jugoslávie vlastní stát" (in Czech). Novinky.cz. Právo. Archived from the original on 17 April 2015. Retrieved 15 April 2015.
- ↑ McKirdy, Euan (25 April 2015). "Liberland: Could the world's newest micronation get off the ground?". CNN. Retrieved 9 March 2016.
- ↑ "Verdis, la "eco-república libre" que preside un pibe de 17 años | Es un pequeño territorio ubicado en los Balcanes y que pide reconocimiento internacional". 28 September 2021.
- ↑ "Osnovali državu na našem spornom teritoriju: 'Cilj nam je pomirenje naroda'".
- ↑ "Viva Verdis: Man declares country in unclaimed pocket of land between Serbia and Croatia". NBC News. 30 August 2025. Retrieved 25 October 2025.
- ↑ Knight, Lucy (19 August 2025). "'We would love to enter Eurovision!' The boy who saw some unclaimed land – and founded his own country". The Guardian. ISSN 0261-3077. Retrieved 25 October 2025.
References
[edit]- Books
- Klemenčić, Mladen; Schofield, Clive H. (2001). War and Peace on the Danube: The Evolution of the Croatia-Serbia Boundary. Durham, England: International Boundaries Research Unit. ISBN 9781897643419.
- Lukic, Reneo (2010). "The Emergence of the Nation-State in East-Central Europe and the Balkans in Historical Perspective". In Ramet, Sabrina P. (ed.). Central and Southeast European Politics since 1989. Cambridge, England: Cambridge University Press. pp. 39–63. ISBN 9781139487504.
- Scientific journal articles
- Štambuk-Škalić, Marina (November 1995). "Hrvatska istočna granica u dokumentima 1945–1947" [Croatian Eastern Border in Documents 1945–1947]. Fontes (in Croatian). 1 (1). Zagreb, Croatia: Croatian State Archives: 153–329. ISSN 1330-6804.
- News reports
- Arsenić, Radoje; Mitrinović, Biljana (19 January 2010). "Srpsko – hrvatsko forsiranje granice" [Serbian - Croatian Pushing of the Border]. Politika (in Serbian).
- Bošnjak, Igor; Ciglenečki, Dražen (22 March 2014). "Hrvatskoj nedostupno 10.000 hektara uz Dunav, Srbija izbjegava dogovor" [10,000 Hectares Along Danube Inaccessible to Croatia, Serbia Avoids Agreement]. Glas Slavonije (in Croatian).
- Butigan, Sanja (15 July 2013). "Vukovarski otok na Dunavu opet pun izletnika" [Vukovar Island on the Danube Full of Visitors]. Glas Slavonije (in Croatian).
- "Croatia-Serbia border issue critical". B92. Tanjug. 21 February 2010.
- "Croatia "won't use bilateral issues" against Serbia". B92. Tanjug. 26 March 2014.
- Ciglenečki, Dražen (21 March 2014). "Nećemo biti kao Slovenci, ali ćemo Srbiji granicu na Dunavu uvjetovati" [We Won't Be Like Slovenes, but the Danube Border Will be a Condition for Serbia] (in Croatian). Novi list.
- Flego, Miroslav (22 April 2010). "Srbijanski radikali traže rezoluciju za utvrđivanje granice na Dunavu" [Serbia's Radicals Demand Resolution on Determining the Danube Border] (in Croatian). Večernji list.
- "Gde je granica na Dunavu?" [Where is the Border at the Danube?] (in Serbian). B92. 29 March 2014.
- "Granični spor s Hrvatskom usporit će put Srbije u EU" [Border Dispute With Croatia to Slow Serbia's EU Accession] (in Croatian). Večernji list. 13 June 2010.
- Malenica, Anita (27 July 2002). "Pripadnici Jugovojske uz pucnje uhitili pa pustili Vladimira Štengla, Nikolu Šafera i još 26-ero ljudi" [Yugoslav Army Troops Fired Shots and Arrested then Released Vladimir Štengl, Nikola Šafer and 26 Others]. Slobodna Dalmacija (in Croatian).
- Barbir-Mladinović, Ankica (24 July 2012). "Hrvatska i susjedi: Svi granični nesporazumi" [Croatia and Neighbours: All Border Disputes]. Radio Slobodna Evropa (in Croatian). Radio Free Europe/Radio Liberty.
- Palokaj, Augustin (31 January 2011). "Pregovori oko pristupanja: Srbija koči ulazak Hrvatske u EU?" [Accession Negotiations: Serbia Slows Croatia's EU Accession?] (in Croatian). Jutarnji list.
- Pavelić, Boris (8 February 2012). "Josipović za arbitražu o granici sa Srbijom i BiH" [Josipović Advocates Arbitration in Border Disputes with Serbia and Bosnia and Herzegovina] (in Croatian). Novi list.
- "Preminuo Radoslav Stojanović" [Radoslav Stojanović Dies] (in Serbian). B92. 31 August 2011.
- Prusina, Tomislav (27 July 2002). "Pucali su iznad naših glava!" [They Shot Over our Heads]. Slobodna Dalmacija (in Croatian).
- Ramljak, Olga (27 July 2002). "Svilanovićeva isprika nas ne zadovoljava" [Svilanović's Apology does not Satisfy Us]. Slobodna Dalmacija (in Croatian).
- Dragović, R.; Simić, J. (1 March 2012). "Sporovi: Granica u Dunav potonula" [Disputes: Border Sank in Danube] (in Serbian). Večernje novosti.
- "Vukovarska ada za opuštanje" [Vukovar Island for Relaxation] (in Serbian). B92. 29 July 2006.
- "Warming Signs between Serbia and Croatia". Bloomberg Businessweek. 14 April 2010. Archived from the original on 17 April 2010.
- Žabec, Krešimir (30 October 2006). "Srpska vojska povukla se s granice s Hrvatskom" [Serbian Army Pulls Back from Croatian Frontier]. Jutarnji list (in Croatian). Archived from the original on 17 October 2012.
- Other sources
- Balfour, Rosa; Bašić, Dijana (November 2010). "A bridge over troubled borders: Europeanising the Balkans" (PDF). Brussels, Belgium: European Policy Centre.
- Ostroški, Ljiljana, ed. (December 2015). Statistički ljetopis Republike Hrvatske 2015 [Statistical Yearbook of the Republic of Croatia 2015] (PDF). Statistical Yearbook of the Republic of Croatia (in Croatian and English). Vol. 47. Zagreb: Croatian Bureau of Statistics. ISSN 1333-3305. Retrieved 27 December 2015.
