نوع مقاله : مقاله پژوهشی

نویسندگان

1 استاد، گروه شهرسازی، دانشکده معماری و شهرسازی، دانشگاه تربیت‌مدرس، تهران، ایران.

2 دانشجوی دکتری، گروه شهرسازی، دانشکده معماری و شهرسازی، دانشگاه تربیت‌مدرس، تهران، ایران.

3 دانشجوی دکتری، دانشکده شهرسازی، دانشکدگان هنرهای زیبا، دانشگاه تهران، تهران، ایران.

4 دانشجوی کارشناسی ارشد، دانشکده معماری، دانشکدگان هنرهای زیبا، دانشگاه تهران، تهران، ایران.

10.22034/urbs.2026.145423.5254

چکیده

در دهه‌های اخیر، جایگاه شهرها در نظام حکمرانی جهانی دستخوش تحولی معنادار شده و شهرها از واحدهایی صرفاً مدیریتی به کنشگران فعال در عرصه تعاملات فراملی ارتقا یافته‌اند. این تحول که در ادبیات با عنوان «دیپلماسی شهری» شناخته می‌شود، امکان کنش مستقل یا نیمه‌مستقل شهرها را در قالب شبکه‌های بین‌شهری، همکاری‌های موضوعی و روابط شهر به شهر فراهم کرده است. در این میان، روابط خواهرخواندگی به‌عنوان یکی از قدیمی‌ترین و در عین حال مناقشه‌برانگیزترین سازوکارهای دیپلماسی شهری، همواره میان کارکرد نمادین و ظرفیت‌های عملی همکاری نوسان داشته است. با وجود گسترش پژوهش‌ها در این حوزه، ادبیات موجود عمدتاً پراکنده، ناهمگون و فاقد جمع‌بندی تحلیلی منسجم درباره ابعاد، کارکردها و محدودیت‌های واقعی این سازوکار است. هدف این پژوهش، ارائه تصویری نظام‌مند از تحولات مفهومی و کارکردی دیپلماسی شهری با تمرکز بر سازوکار روابط خواهرخواندگی و شناسایی الگوهای مسلط، شکاف‌های پژوهشی و پیامدهای سیاستی آن است. بدین منظور، از روش مرور نظام‌مند استفاده شد و مقالات علمی منتشرشده در بازه زمانی 2000 تا 2025 در پایگاه‌های استنادی معتبر مورد جست‌وجو، غربالگری و تحلیل قرار گرفتند. داده‌های استخراج‌شده با رویکرد تحلیل مضمون مورد کدگذاری و دسته‌بندی قرار گرفت و مضامین غالب شناسایی شد. یافته‌های پژوهش نشان می‌دهد که دیپلماسی شهری در ادبیات معاصر از رویکردهای نمادین و تشریفاتی به‌سوی همکاری‌های مسئله‌محور، شبکه‌ای و یادگیرنده در حال گذار است. روابط خواهرخواندگی در قالب پنج مؤلفه محوری قابل تبیین است: حکمرانی چندسطحی و مشروعیت نهادی، عقلانیت تصمیم‌گیری و راهبری همکاری‌ها، نهادمندی اجرا و تداوم اقتصادی، توانمندسازی شبکه‌ای و نوآورانه و یادگیری، تاب‌آوری و ارزیابی مبتنی بر داده. در عین حال، نتایج نشان می‌دهد که در فقدان چارچوب‌های نهادی شفاف، ظرفیت‌های خواهرخواندگی اغلب به سطح تعاملات نمادین تقلیل یافته و از تحقق دستاوردهای پایدار بازمی‌ماند. بر این اساس، پژوهش حاضر بر ضرورت بازتعریف روابط خواهرخواندگی به‌عنوان سازوکاری انتخابی، مسئله‌محور و مبتنی بر ظرفیت نهادی تأکید می‌کند و می‌تواند مبنایی تحلیلی برای سیاست‌گذاری آگاهانه‌تر در حوزه دیپلماسی شهری و مدیریت تعاملات فراملی شهرها فراهم آورد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Cities as Diplomatic Actors: A Systematic Review of Urban Sister City Mechanisms

نویسندگان [English]

  • Hashem Dadashpoor 1
  • Mana Vahidbafandeh 2
  • Mohammad Mehdi Panahi 3
  • Maede Dadashpour 4

1 Urban and Regional Planning Department, Faculty of Art & Architecture, Tarbiat Modares University, Tehran, Iran.

2 Urban and Regional Planning Department, Faculty of Art & Architecture, Tarbiat Modares University, Tehran, Iran.

3 School of Urban Planning, College of Fine Arts, University of Tehran, Tehran, Iran.

4 School of Architecture, College of Fine Arts, University of Tehran, Tehran, Iran.

چکیده [English]

Highlights

Interaction among institutions at the local, national, and international levels is essential for establishing effective and transparent governance in sister-city relations.
By moving beyond the traditional symbolism of sister-city partnerships, urban diplomacy has increasingly focused on issue-oriented network coalitions to strengthen local soft power.
The sustainability of transnational urban mechanisms depends on rational decision-making, institutionalized implementation, and data-driven evaluation to enhance learning and resilience.
The effectiveness of sister-city relations requires a transition from broad, non-binding agreements toward selective and limited forms of cooperation based on institutional capacity and clearly defined shared issues.

 
Introduction
In recent decades, the city has moved beyond its traditional role as an administrative unit of national governments to become a major arena for transnational action. International relations and urban studies increasingly view cities as networks of human, knowledge-based, and institutional capital capable of participating in diplomacy, meaning-making, and the exercise of soft power. Alongside the shift from state-centered models toward multi-level governance, this transformation has contributed to the emergence of “city diplomacy” as a form of local foreign policy. Within this framework, cities act as intermediary actors, managing relations, negotiations, and transnational cooperation through intercity networks and international institutions.
Theoretical Framework
The theoretical framework of this study views sister-city relations as a practical mechanism of city diplomacy within a multi-level governance framework. In this context, cities operate as transnational actors and strengthen their development capacities and soft power through institutional, economic, cultural, and knowledge-based cooperation. The framework combines three approaches: the institutional-functional approach, which focuses on governance structures and operational mechanisms; the network approach, which examines interactions within international city networks; and the development-oriented approach, which emphasizes policy learning, knowledge transfer, and sustainable urban development. Together, these approaches guide the analysis of the literature and the identification of the main dimensions of sister-city relations.

Conceptualizing City Diplomacy and Sister-City Relations

Sister-city relations refer to international agreements established between two or more cities in different countries with the aim of promoting economic, cultural, social, educational, scientific, and environmental cooperation. These relationships are generally non-binding in nature; that is, they are primarily established through memoranda of understanding and, unlike formal intergovernmental treaties, do not impose legally enforceable obligations. Nevertheless, in practice, they may lead to stable and long-term cooperation.

Historical Development of Sister Cities and Their Role in City Diplomacy

The origins of sister-city relations can be traced back to the period following the Second World War, when local communities in war-affected countries, particularly in Europe, sought to rebuild trust, promote peaceful coexistence, and reduce international tensions. Some of the earliest examples of such cooperation emerged between cities in the United Kingdom and Germany and focused primarily on cultural, educational, and social exchanges aimed at fostering solidarity among local communities. Although these relationships were initially symbolic and peace-oriented, their functions gradually expanded in parallel with changes in the international system.
Methodology
This study employed a systematic review to collect, evaluate, and synthesize academic and policy evidence on city diplomacy and sister-city relations. Through thematic analysis, it examined the development of the literature and identified key components relevant to the governance and policymaking of intercity relations. This method was selected because the literature is dispersed across the fields of international relations, urban planning, multi-level governance, and network studies. To reduce selection bias and improve transparency, the search and screening process followed the PRISMA framework.
The review covered English-language sources published between 2000 and 2025 and Persian-language sources published between 1385 and 1405 in the Solar Hijri calendar. International databases included Scopus, Web of Science, Springer, and Google Scholar, while Persian sources were retrieved from SID, Magiran, IranDoc, and Noormags.
In addition to academic publications, relevant policy and strategic documents on municipal international relations, particularly those related to Tehran and national intercity cooperation, were reviewed. Their inclusion enabled an assessment of the gap between academic knowledge and practical implementation.
Results and Discussion
Publication trends show a steady increase in research on city diplomacy and sister-city relations, with the highest volume of publications recorded during 2020–2025. The literature is structured around three interconnected layers: governance and institutional regulation, strategic implementation, and learning and networking. “Multi-level integration” emerged as the dominant theme, supported by institutional networking, data-driven decision-making, and structured implementation. Overall, sister-city planning can be understood as a dynamic, network-based, and learning-oriented process.
Conclusion
The effectiveness of sister-city relations depends on institutional coherence, rational decision-making, structured implementation, and network-based cooperation rather than on symbolic agreements alone. Sustainable outcomes require long-term institutionalization, effective municipal coordination, and continuous learning. In Iranian cities, institutional fragmentation, managerial instability, and weak evaluation mechanisms remain the main barriers to effective city diplomacy.
Acknowledgment
This article is derived from the research project entitled “Designing a Strategic Planning Model for the Tehran Metropolis to Utilize the Capacities of Sister-City Partnerships,” supported by the Tehran Municipality Research and Studies Center.

کلیدواژه‌ها [English]

  • City diplomacy
  • sister-city relations
  • international city networks
  • multi-level governance
  • issue-oriented cooperation
Abtahi, S. H., & Shiani, M. (2020). A study on the obstacles of citizens’ social participation as a component of urban diplomacy. Iranian Journal of Anthropology, 17(30), 15–39. [In Persian].
Acuto, M. (2013). Global cities, governance and diplomacy: The urban link. Routledge. https://doi.org/10.4324/9780203073810
Acuto, M., Decramer, H., Kerr, J., Klaus, I., Tabory, S., & Toly, N. J. (2018). Toward city diplomacy: Assessing capacity in select global cities. Chicago Council on Global Affairs; City Leadership Lab.
Acuto, M., Kosovac, A., & Hartley, K. (2021). City diplomacy: Another generational shift? Diplomatica, 3(1), 137–146. https://doi.org/10.1163/25891774-03010003
Acuto, M., Morissette, M., & Tsouros, A. (2016). City diplomacy: Towards more strategic networking? Learning with WHO Healthy Cities. Global Policy, 8(1), 14–22. https://doi.org/10.1111/1758-5899.12382
Acuto, M., & Rayner, S. (2016). City networks: Breaking gridlocks or forging (new) lock-ins? International Affairs, 92(5), 1147–1166. https://doi.org/10.1111/1468-2346.12700
Afzali, S. M. J., & Kalani, A. (2023). The impact of sister cities on urban development with an emphasis on urban diplomacy and national development: A case study of Shiraz Metropolis. Political Spatial Planning, 5(4), 436–453. https://www.magiran.com/p2661336 [In Persian].
Ahmadi, A., & Attari, S. M. (2025). An analysis of sister city relationships and urban cultural diplomacy in promoting intercultural communication. Cultural Diplomacy Studies, 2(1), 39–78.
Alejo, A. (2022). Diasporas as actors in urban diplomacy. The Hague Journal of Diplomacy, 17(1), 138–150.
Amiri, M., Khalili, A., & Mofidi Shemirani, S. M. (2023). Conceptualization and development of an urban diplomacy model in urban networks. Urban Planning Geography Research, 10(4), 135–158. https://doi.org/10.22059/jurbangeo.2023.354136.1781 [In Persian].
Anheier, H. K., & Isar, Y. R. (Eds.). (2012). Cities, cultural policy and governance. SAGE.
Ansell, C., & Gash, A. (2008). Collaborative governance in theory and practice. Journal of Public Administration Research and Theory, 18(4), 543–571. https://doi.org/10.1093/jopart/mum032
Atanga, R. A., Wang, Y., Ayambire, R. A., Wang, C., Xu, M., & Li, J. (2024). Sister city partnerships and sustainable development in emerging cities: Empirical cases from Ghana and Tanzania. Habitat International, 154, Article 103208. https://doi.org/10.1016/j.habitatint.2024.103208
Atchison, J., Head, L., & Gates, A. (2010). Wheat as food, wheat as industrial substance: Comparative geographies of transformation and mobility. Geoforum, 41(2), 236–246.
Balbim, R. (2016). City diplomacy: Global agendas, local agreements. In The geopolitics of cities: Old challenges, new issues (pp. 123–170).
Barber, B. R. (2013). If mayors ruled the world: Dysfunctional nations, rising cities. Yale University Press.
Basirat, M., & Jalili, S. M. (2014). Analysis of opportunities and challenges in the development of urban diplomacy in Tehran Metropolis. Journal of Fine Arts: Architecture and Urban Planning, 19(3), 53–66. https://doi.org/10.22059/jfaup.2014.55404 [In Persian].
Bovaird, T., & Löffler, E. (Eds.). (2009). Public management and governance (2nd ed.). Routledge.
Brenner, N. (Ed.). (2014). Implosions/explosions: Towards a study of planetary urbanization. Jovis.
Bunnell, T. (2015). Antecedent cities and inter-referencing effects: Learning from and extending beyond critiques of neoliberalisation. Urban Studies, 52(11), 1983–2000.
Castán Broto, V., & Bulkeley, H. (2013). A survey of urban climate change experiments in 100 cities. Global Environmental Change, 23(1), 92–102. https://doi.org/10.1016/j.gloenvcha.2012.07.005
Castells, M. (2010). The rise of the network society (2nd ed., with a new preface). Wiley-Blackwell. https://doi.org/10.1002/9781444319514
Clarke, N. (2010). Globalising care? Town twinning in Britain since 1945. Geoforum, 41(1), 115–125. https://doi.org/10.1016/j.geoforum.2009.09.006
Cornago, N. (2018). Diplomacy and paradiplomacy in the redefinition of international security. Routledge.
Curtis, S. (2016a). Cities and global governance: State failure or a new global order? Millennium: Journal of International Studies, 44(3), 455–477. https://doi.org/10.1177/0305829816637233
Curtis, S. (2016b). Global cities and the transformation of international relations. Routledge.
Dadashpoor, H., Panahi, M. M., Vahidbafandeh, M., & Dadashpour, M. (2025). From symbolism to networkism in urban diplomacy: Reimagining knowledge transformation and learning structures in sister city relations. Geography and Territorial Spatial Arrangement. https://doi.org/10.22111/gaij.2025.53820.3312
Derudder, B., Hoyler, M., Taylor, P. J., & Witlox, F. (Eds.). (2012). International handbook of globalization and world cities. Edward Elgar.
Dodgson, M., Gann, D. M., & Salter, A. (Eds.). (2008). The management of technological innovation: Strategy and practice (Rev. ed.). Oxford University Press. https://doi.org/10.1093/oso/9780199208524.001.0001
Evans, G. (2009). Creative cities, creative spaces and urban policy. Urban Studies, 46(5–6), 1003–1040. https://doi.org/10.1177/0042098009103853
Eyvazloo, D. (2020). Urban sister-city relations and transnational relations of cities in Tehran Metropolis. Tehran Urban Studies and Planning Center. [In Persian].
Foth, M. (Ed.). (2009). Handbook of research on urban informatics: The practice and promise of the real-time city. Information Science Reference.
Frantzeskaki, N., & Loorbach, D. (2010). Towards governing infrasystem transitions: Reinforcing lock-in or facilitating change? Technological Forecasting and Social Change, 77(8), 1292–1301.
Frug, G. E. (2001). City making: Building communities without building walls. Princeton University Press.
Ghasemi, F., & Abdollahi, R. (2017). Examining the advantages of sister-city relations in contemporary technocities: The case of Freiburg and Isfahan. In Proceedings of the Fourth National Conference on Islamic Architecture and Urban Planning. [In Persian].
Ghorchi, M., & Kaviani Rad, J. (2019). Examining the compatibility of urban diplomacy with the foreign policy of the Islamic Republic of Iran: A case study of Tehran Metropolis’s sister cities. Geopolitics, 15(1), 60–84. [In Persian].
Giffinger, R., Fertner, C., Kramar, H., Kalasek, R., Pichler-Milanović, N., & Meijers, E. J. (2007). Smart cities: Ranking of European medium-sized cities. Vienna University of Technology. https://doi.org/10.34726/3565
Glaeser, E. (2011). Triumph of the city: How our greatest invention makes us richer, smarter, greener, healthier, and happier. Penguin Press.
Hafezikhah, A. (2025). Cities as soft power actors: Rethinking sovereignty in the age of urban diplomacy. SN Social Sciences, 5(12), Article 228.
Hakimi, S. A., & Nasiri, M. (2021). The role of sister-city relations in generating sustainable municipal revenues: An interpretive structural modelling approach. Urban Studies Quarterly, 10(39), 113–124. https://doi.org/10.34785/J011.2021.322 [In Persian].
Hall, P. (1998). Cities in civilization: Culture, innovation, and urban order. Weidenfeld & Nicolson.
Harrison, J., & Hoyler, M. (Eds.). (2015). Megaregions: Globalization’s new urban form? Edward Elgar.
Healey, P. (2006). Collaborative planning: Shaping places in fragmented societies (2nd ed.). Palgrave Macmillan.
Hodson, M., & Marvin, S. (2010). World cities and climate change: Producing urban ecological security. McGraw-Hill/Open University Press.
Hooghe, L., & Marks, G. (2013). Beyond federalism: Estimating and explaining the territorial structure of government. Publius: The Journal of Federalism, 43(2), 179–204.
Hoseinpour Pouyan, R. (2015). Designing a conceptual model of urban diplomacy. Tehran Urban Studies and Planning Center. [In Persian].
Innes, J. E., & Booher, D. E. (2010). Planning with complexity: An introduction to collaborative rationality for public policy. Routledge.
Jänicke, M. (2012). “Green growth”: From a growing eco-industry to economic sustainability. Energy Policy, 48, 13–21. https://doi.org/10.1016/j.enpol.2012.04.045
Jonas, A. E. G. (2012). City-regionalism: Questions of distribution and politics. Progress in Human Geography, 36(6), 822–829. https://doi.org/10.1177/0309132511432062
Karimi, A. (2023). A review of successful international experiences in urban diplomacy. In Proceedings of the Ninth Scientific–Research Conference on the Development and Promotion of Architecture and Urban Planning Sciences in Iran. [In Persian].
Keating, M. (2013). Rescaling the European state: The making of territory and the rise of the meso. Oxford University Press.
Kilburn, J., San Miguel, C., & Kwak, D. H. (2013). Is fear of crime splitting the sister cities? The case of Los Dos Laredos. Cities, 34, 30–36. https://doi.org/10.1016/j.cities.2012.11.003
Klijn, E.-H., & Teisman, G. R. (2003). Institutional and strategic barriers to public-private partnership: An analysis of Dutch cases. Public Money & Management, 23(3), 137–146. https://doi.org/10.1111/1467-9302.00361
Kloosterman, R. C., & Lambregts, B. (2001). Clustering of economic activities in polycentric urban regions: The case of the Randstad. Urban Studies, 38(4), 717–732. https://doi.org/10.1080/00420980120035303
Knox, P. L. (2011). Cities and design. Routledge.
Koelemaij, J., Taveirne, S., & Derudder, B. (2023). An economic geography perspective on city diplomacy. Urban Studies, 60(6), 995–1012.
Kosovac, A., Acuto, M., & Jones, T. L. (2020). Acknowledging urbanization: A survey of the role of cities in UN frameworks. Global Policy, 11(3), 293–304.
Kosovac, A., Hartley, K., Acuto, M., & Gunning, D. (2021). City leaders go abroad: A survey of city diplomacy in 47 cities. Urban Policy and Research, 39(2), 127–142. https://doi.org/10.1080/08111146.2021.1886071
Kosovac, A., & Pejic, D. (2021). What is next? New forms of city diplomacy and emerging global urban governance. In Cities in global governance: From multilateralism to multistakeholderism (pp. 87–96).
La Porte, T. (2013). City public diplomacy in the European Union. In European public diplomacy: Soft power at work (pp. 85–111). Palgrave Macmillan.
Lee, T., & van de Meene, S. (2012). Who teaches and who learns? Policy learning through the C40 cities climate network. Policy Sciences, 45(3), 199–220.
Leffel, B. (2018). Animus of the underling: Theorizing city diplomacy in a world society. The Hague Journal of Diplomacy, 13(4), 502–522.
Liu, X., & Hu, X. (2018). Are ‘sister cities’ from ‘sister provinces’? An exploratory study of sister city relations in China. Networks and Spatial Economics, 18(3), 473–491. https://doi.org/10.1007/s11067-018-9408-z
Lynch, K. (1960). The image of the city. MIT Press.
Mamadouh, V., Meijer, A., Sidaway, J. D., & Van der Wusten, H. (2015). Toward an urban geography of diplomacy: Lessons from The Hague. The Professional Geographer, 67(4), 564–574.
Manfredi-Sánchez, J. L. (2022). The political economy of city diplomacy. Economic and Political Studies, 10(2), 228–249.
Marchetti, R. (2021). City diplomacy: From city-states to global cities. University of Michigan Press.
Marquez, P. (2002). Urban diplomacy: Toulouse and its neighbors in the twelfth and thirteenth centuries. Viator, 33, 87–99.
Mehrnia, H. (2021). Policy propositions in the field of international relations and urban diplomacy. Tehran Urban Studies and Planning Center. [In Persian].
Moulaert, F., & Mehmood, A. (2010). Analysing regional development and policy: A structural-realist approach. Regional Studies, 44(1), 103–118.
Mousavi Shafaei, M. (2010). Urban diplomacy: A tool for national development in the age of the space of flows (Danesh-e Shahr Series, No. 18). Tehran Urban Research and Planning Center. [In Persian].
(2015). Governing the city. OECD Publishing. https://doi.org/10.1787/9789264226500-en
Payre, R. (2010). The importance of being connected: City networks and urban governance. Global Networks, 10(2), 260–280.
Peck, J., & Theodore, N. (2015). Fast policy: Experimental statecraft at the thresholds of neoliberalism. University of Minnesota Press.
Pejic, D., Kling, S., Leavesley, A., Klaus, I., Trijsburg, I., Kosovac, A., & Acuto, M. (2024). City diplomacy in response to multiple crises: The 2024 Cities and International Engagement Survey. Melbourne Centre for Cities. https://doi.org/10.26188/26866966
Prasittisopin, L., Kitkuakul, P., Chotchakornpant, K., & Rugkhapan, N. T. (2024). Implementing the sister city policy: Perspectives from Thailand. Nakhara: Journal of Environmental Design and Planning, 23(2), Article 413. https://doi.org/10.54028/NJ202423413
Qoli-Pour, Y., Ahmadpour, A., Asghari Abkenar, A., & Fallah Heydari, F. (2018). The role of sister cities in the development of urban diplomacy. In Proceedings of the First Conference on Competitiveness and the Future of Urban Transformations. [In Persian].
Qorchi, M. (2020). Preparation and compilation of the executive document of Tehran’s urban diplomacy. Cultural and Social Studies Group, Tehran Urban Studies and Planning Center. [In Persian].
Rhodes, R. A. W. (2007). Understanding governance: Ten years on. Organization Studies, 28(8), 1243–1264. https://doi.org/10.1177/0170840607076586
Sager, T. (2011). Neo-liberal urban planning policies: A literature survey 1990–2010. Progress in Planning, 76(4), 147–199. https://doi.org/10.1016/j.progress.2011.09.001
Sassen, S. (2001). The global city: New York, London, Tokyo (2nd ed.). Princeton University Press.
Shakour, A., Afzali, S. M. J., & Khorrambakht, A. A. (2022). Designing a model of the impact of sister cities on urban development with an emphasis on urban diplomacy and national development. Geography and Regional Planning, 12(48), 977–993. https://doi.org/10.22034/jgeoq.2022.307427.3336 [In Persian].
Sørensen, E., & Torfing, J. (2009). Making governance networks effective and democratic through metagovernance. Public Administration, 87(2), 234–258. https://doi.org/10.1111/j.1467-9299.2009.01753.x
Storper, M. (2013). Keys to the city: How economics, institutions, social interaction, and politics shape development. Princeton University Press.
Storper, M., & Scott, A. J. (2009). Rethinking human capital, creativity and urban growth. Journal of Economic Geography, 9(2), 147–167.
Susskind, L., Camacho, A. E., & Schenk, T. (2012). A critical assessment of collaborative adaptive management in practice. Journal of Applied Ecology, 49(1), 47–51. https://doi.org/10.1111/j.1365-2664.2011.02070.x
Tafazoli, H., Mohammadi, Y., & Tavakoli, M. (2022). Examining the position and significance of sister cities and Iran’s urban twinning capacities. Danesh-e Tafsir-e Siyasi, 3(10), 58–86. [In Persian].
Taylor, P. J. (2004). World city network: A global urban analysis. Routledge. https://doi.org/10.4324/9780203634059
Tham, A., & Shim, C. (2025). (Re) evaluating sister-cities for economic development? Pracademic viewpoints. Cities, 158, Article 105637. https://doi.org/10.1016/j.cities.2024.105637
Tneh, V., & Zaini, M. (2024). Economic and cultural partnership opportunities between Kupang and Chiba cities through sister city cooperation. Journal of Paradiplomacy and City Networks, 3(1), 29–41. https://doi.org/10.18196/jpcn.v3i1.43
Tombeng, D. P. (2022). Sister city as a form of cooperation between Jakarta and other cities [Unpublished manuscript]. Muhammadiyah University of Yogyakarta.
UN-Habitat. (2020). World cities report 2020: The value of sustainable urbanization. United Nations Human Settlements Programme.
Van der Pluijm, R., & Melissen, J. (2007). City diplomacy: The expanding role of cities in international politics (Clingendael Diplomacy Papers No. 10). Netherlands Institute of International Relations Clingendael.
Wu, G., Li, X., & Hu, Z. (2024). Evolving connections: Understanding the dynamics behind the Sino-foreign sister city network. Cities, 152, Article 105219. https://doi.org/10.1016/j.cities.2024.105219
Zarghani, S. H., Ranjkesh, M. J., & Eskandaran, M. (2014). Urban diplomacy: An analysis of the role and position of cities as new actors in international relations. Urban and Regional Studies, 5(20), 163–182. [In Persian].
Zelinsky, W. (1991). The twinning of the world: Sister cities in geographic and historical perspective. Annals of the Association of American Geographers, 81(1), 1–31. https://doi.org/10.1111/j.1467-8306.1991.tb01676.x
Zohrani, M., & Rajaei, A. (2020). International cooperation opportunities through the sister-city approach. Danesh-e Tafsir-e Siyasi, 2(3), 1–24. [In Persian].
Zolfali-Fam, H. (2017). City, diplomacy, and international relations. Hoquq-e Mellal, (24), 323–338. [In Persian].
Zolfali-Fam, H., & Saadati, M. (2015). City, diplomacy, and international relations. In Proceedings of the First National Conference on Strategies for the Development and Promotion of Educational Sciences, Psychology, Counseling and Education in Iran. [In Persian].