1. Introduction

Central and South Asia form one of Eurasia’s most significant geographic junctions. Central Asia connects the continent’s east–west and north–south routes, while South Asia contains one of the world’s largest population bases and consumer markets. Taken together, the countries of the two subregions have a population of more than 2 billion people; however, their direct economic interaction remains below its potential level.

The scale of the potential market is confirmed by the figures: in 2024, the population of South Asia was approximately 1.68 billion people, while the region’s combined GDP was about US$4.5 trillion. At the same time, the economy of the five Central Asian countries in 2024 amounted to approximately US$489 billion. However, the level of interregional integration remains low: even within South Asia, intraregional trade is estimated at around 5% of total trade turnover, which is significantly lower than the ASEAN figure^[1][2][3].

This is evident in trade statistics: Central Asia’s main trade flows continue to be oriented toward Russia, China, the European Union, Türkiye, and the Middle East, while trade with South Asia occupies a comparatively limited niche.

The underused potential is explained not by a lack of demand, but by structural constraints. Between the two subregions, there are mountain barriers, complex cross-border routes, differing levels of integration into international supply chains, non-uniform customs and technical procedures, as well as the Afghanistan factor, which is simultaneously the shortest connecting link and the most sensitive element of the regional architecture. Therefore, the issue of connectivity has not only commercial but also strategic significance.

The restoration of economic ties between Central and South Asia should not be viewed as a romanticized return to historical routes. In modern conditions, it is a matter of competitiveness, supply-chain security, energy resilience, and diversification of foreign economic directions. For the countries of Central Asia, the southern route opens shorter access to the ports of the Arabian Sea and the Indian Ocean. For the countries of South Asia, it creates an opportunity to gain access to energy resources, food products, industrial goods, and new markets in Eurasia.

Uzbekistan occupies a special place in this logic. It is located in the central part of the region, borders all Central Asian states and Afghanistan, and therefore is capable of forming a link between the internal markets of Central Asia and the southern direction. At the same time, the role of a connector state means more than the transit of goods. It includes the coordination of infrastructure projects, the development of logistics services, the improvement of institutional quality, the creation of an analytical basis for decision-making, and the involvement of the private sector in interregional projects.

2. Historical and geographical preconditions for connectivity

The historical connection between Central and South Asia was formed long before the emergence of modern state borders. The cities of Transoxiana, Khorasan, Bactria, and northern India were part of a network of caravan routes and exchanges of artisanal goods, knowledge, religious traditions, and financial practices. Samarkand, Bukhara, Balkh, Merv, Kabul, Peshawar, and Lahore, in different periods, served as trade and cultural hubs linking the Eurasian space.

However, historical connectedness does not automatically translate into economic integration today. Modern supply chains depend on railways, highways, ports, energy networks, digital cargo-tracking systems, insurance, banking settlements, and predictable rules. Where even one of these elements is absent, transit becomes expensive, slow, and risky.

The geography of the region creates both incentives and constraints. On the one hand, the distance from Uzbekistan’s southern borders to northern Afghanistan is relatively short, and the route through Afghanistan is potentially the shortest overland path from Central Asia to Pakistan and onward to the ports of the Indian Ocean. On the other hand, mountain ranges, differences in railway gauge, the limited capacity of border infrastructure, security issues, and insufficient standardization of procedures increase the cost of projects.

Uzbekistan’s geographical role has not only qualitative but also measurable significance: the country is one of only two double-landlocked states in the world and, at the same time, the only state bordering all four other Central Asian countries as well as Afghanistan. In this context, the Mazar-i-Sharif–Kabul–Peshawar railway project, with a length of approximately 573 km, acquires systemic importance, since it could reduce the time and cost of transportation toward Pakistan’s ports by roughly 30%^[4].

Therefore, connectivity should be understood more broadly than the physical connection of two points on a map. In the modern economy, it includes four dimensions. The first is infrastructural: roads, railways, terminals, ports, and energy networks. The second is institutional: customs, tariffs, standards, sanitary and phytosanitary rules, permits, and transit guarantees. The third is commercial: demand, purchasing power, contracts, logistics companies, insurance, and banking channels. The fourth is social and humanitarian: education, labor skills, tourism, medical ties, and research cooperation.

This approach helps avoid oversimplification. Even the shortest road will not become a sustainable corridor unless it is supported by a reliable legal environment, competitive tariffs, financial guarantees, and coordination among states.

3. Current state of trade and economic cooperation

Trade and economic ties between Central and South Asia are developing, but their scale still does not correspond to the size of the markets. Trade between Central Asian countries and India, Pakistan, Bangladesh, Sri Lanka, and Afghanistan remains relatively modest compared with their trade with China, Russia, the European Union, Türkiye, and countries of the Middle East.

Central Asia supplies, or could potentially expand supplies to South Asia, in such areas as agricultural products, grain, fruit and vegetable products, textiles, fertilizers, energy goods, certain types of metals, and industrial raw materials. South Asia, primarily India and Pakistan, holds competitive positions in pharmaceuticals, medical goods, IT services, equipment, textile products, processed food products, and consumer goods.

In recent years, Uzbekistan has been strengthening the southern direction of its foreign economic policy. Trade ties with India and Pakistan are developing through pharmaceuticals, textiles, food products, services, logistics, and investment projects. Uzbekistan’s foreign trade in the southern direction is already growing, but it still occupies a limited place in the overall structure of foreign trade. The largest trade flows with South Asian countries are with Afghanistan and India. However, the very fact that certain bilateral flows are growing does not solve the main problem: interregional trade remains fragmented. In order to turn it into a sustainable market, it is necessary to reduce transaction costs, ensure the predictability of transit, make standards comparable, and develop business services.

The issue of trade data is especially important. Mutual trade is often assessed using different sources, while the statistics of exporting countries and importing countries may diverge. To develop effective policy, a regularly updated data panel is needed, broken down by corridors, types of cargo, border-crossing times, transportation costs, return loads, the number of permits, and the actual use of preferential regimes. Without such a database, regional initiatives risk remaining merely declaratory.

4. Transport and logistics infrastructure as the basis of connectivity

Transport infrastructure is the material foundation for the rapprochement of Central and South Asia. At the same time, it is more accurate to speak not of a single route, but of a portfolio of corridors. Relying on only one route increases the vulnerability of the entire system. A diversified network of routes through Afghanistan, Iran, the Caspian Sea, the Caucasus, and existing Eurasian directions creates redundancy, reduces risks, and strengthens the negotiating position of shippers.

The key project in the southern direction remains the trans-Afghan railway corridor Mazar-i-Sharif–Kabul–Peshawar. Its strategic value lies in its potential to connect Uzbekistan and other Central Asian countries with Pakistan’s ports, including Karachi, Qasim, and Gwadar. If implemented, such a corridor could reduce the distance and delivery time for certain types of cargo. However, the project requires the resolution of several complex issues: financing, security, technical parameters, railway gauge compatibility, the operating model, tariffs, and the distribution of risks among participants.

The Termez–Hairatan hub in Uzbekistan has particular significance. It is the closest entry point from Uzbekistan into Afghanistan and is already used as a logistics, humanitarian, and trade channel. The development of terminals, warehouses, customs capacities, multimodal transport services, and digital cargo-control systems could turn this hub into a stable anchor point for interregional trade.

Alongside the trans-Afghan route, the route through Iran is also important. For India, Central Asia, and Afghanistan, the Chabahar port is of particular significance, as are its links with the International North–South Transport Corridor and the Ashgabat Agreement. This option does not replace the trans-Afghan route, but it increases the resilience of the trade system. Events of recent years have shown that the closure or restriction of individual routes quickly increases the importance of alternative pathways through Iran and the countries of Central Asia.

Road corridors remain a necessary complement to railways. They are especially important for perishable products, small consignments, e-commerce, pharmaceuticals, and high-value-added goods. In this area, the key factors are not only roads, but also border procedures, the permit system for carriers, weight control, insurance, the safety of parking areas, and access to backhaul cargo.

The development of air connectivity plays a separate role. Direct flights between Tashkent, Samarkand, Almaty, Astana, Delhi, Mumbai, Lahore, and other cities do not create mass freight logistics, but they reduce barriers to business travel, tourism, education, medical services, and managerial oversight of investment projects. For modern business, such mobility is not a secondary factor, but a systemic one.

5. Energy partnership: from project-based logic to a regional market

Energy is one of the most obvious areas of complementarity between Central and South Asia. The Central Asian countries possess significant resources in natural gas, hydropower, solar power, and wind generation. South Asia, primarily Pakistan, India, Bangladesh, and Afghanistan, faces high energy demand, seasonal consumption peaks, and the need for a more reliable supply structure.

The most advanced interregional project in the electricity sector is CASA-1000. According to World Bank materials, the project is intended to ensure the transmission of up to 1,300 MW of surplus summer electricity from Kyrgyzstan and Tajikistan to Afghanistan and Pakistan. The project also provides for high-voltage transmission infrastructure, including power transmission lines and converter stations. Its significance goes beyond the energy sector: it demonstrates the possibility of contract-based electricity trade between the subregions with the participation of international financial institutions.

In the gas sector, the best-known project is TAPI: Turkmenistan–Afghanistan–Pakistan–India. Its planned logic is straightforward: Turkmen gas is expected to flow through Afghanistan to the energy-deficient markets of South Asia. Published descriptions of the project usually indicate a length of approximately 1,800 km and a designed capacity of up to 33 billion cubic meters of gas per year. However, TAPI remains a complex project with a high dependence on security, financing, long-term contracts, payment guarantees, and political coordination among the participants.

CASA-1000 has not only political but also measurable infrastructural significance: the project cost is estimated at approximately US$1.2 billion, while the designed transmission capacity is 1,300 MW. The Kyrgyz component provides for around 456 km of 500 kV power transmission lines. This makes it possible to view CASA-1000 as the first major example of contract-based interregional electricity trade between Central and South Asia^[5][6].

The new energy agenda includes not only the export of fuel and electricity, but also the development of low-carbon solutions. Uzbekistan, Kazakhstan, Kyrgyzstan, and Tajikistan are expanding projects in solar, wind, and hydropower, while also modernizing their grids. In the long term, South Asia could become a market for seasonal electricity and energy services from Central Asia. However, this requires rules for cross-border trade, compatible dispatch mechanisms, commercial guarantees, transparent tariffs, and investment in grid resilience.

Energy cooperation must take into account climate and water-related factors. In Central Asia, hydropower is closely linked to irrigation and water resource management. In South Asia, electricity demand depends on temperature peaks, urbanization, and industrial growth. Therefore, energy projects should be accompanied by mechanisms for climate adaptation, forecasting water availability, improving energy efficiency, and developing energy storage systems.

6. Investment cooperation and business ties

Investment cooperation between Central and South Asia is still developing on a case-by-case basis, but it has significant potential. Unlike trade in raw materials, investment requires a higher level of trust, legal certainty, protection of property rights, clear tax regimes, access to foreign-exchange settlements, and high-quality business information.

The most promising areas include pharmaceuticals, medical services, agro-processing, textiles, logistics, warehouse infrastructure, IT services, education, tourism, financial technologies, renewable energy, and the production of components for infrastructure projects. South Asian companies have strong competencies in IT, pharmaceuticals, and services, while Central Asia offers access to raw materials, industrial sites, growing domestic markets, and transit opportunities.

An important task is to move from one-off business contacts to a systematic investment pipeline. This requires project catalogues, clear requirements for investors, standardized public-private partnership models, dispute-resolution mechanisms, insurance against political and commercial risks, and joint workforce training programs.

Small and medium-sized enterprises are of particular importance. Large infrastructure projects create the foundation, but it is small and medium-sized businesses that fill corridors with real goods and services. For them, access to information, affordable logistics services, digital marketplaces, simplified payments, standardized documents, and support in entering a new market are critical.

Development institutions and international financial organizations can play a catalytic role. Their participation reduces risks, improves the quality of project preparation, and disciplines the participants. However, external financing does not replace national reforms. Without clear rules, transparent statistics, and effective courts, even concessional loans will not create a sustainable flow of investment.

7. The strategic role of Uzbekistan as a connector state

Uzbekistan possesses a unique set of preconditions for playing the role of a connector state. It is located at the center of Central Asia, borders all the countries of the region as well as Afghanistan, and is also a major demographic and industrial market. For a country without access to the sea, the development of external corridors is not an optional task, but a condition for long-term competitiveness.

Uzbekistan’s role is not limited to transit. A transit country earns revenue from the movement of goods, but a connector state shapes rules, services, trust, and the institutional environment. This means developing multimodal hubs, creating logistics centers, digitalizing customs procedures, expanding railway and road links, training personnel, attracting banks and insurance organizations, and providing analytical support for projects.

The southern direction strengthens Uzbekistan’s foreign economic diversification. It complements the country’s already existing links in the northern, eastern, and western directions. At the same time, the diversification of routes reduces dependence on individual markets and transit pathways, which is especially important amid instability in global trade, changes in tariff policy, and geopolitical restrictions.

Termez occupies a special place in this strategy. It can serve as a border logistics center, a platform for trade with Afghanistan, a hub of humanitarian and commercial infrastructure, and a symbolic space for discussing connectivity between Central and South Asia. To turn this role into a sustainable result, investment is needed in terminals, railway approaches, warehouse capacity, services for carriers, and a system for analyzing cargo flows.

Uzbekistan’s strength also lies in its ability to put forward multilateral initiatives. Interregional connectivity cannot be implemented through bilateral agreements alone. It requires the alignment of interests among the countries of Central Asia, the countries of South Asia, Afghanistan, international financial institutions, business, and the expert community. In this sphere, Uzbekistan can act as a coordinator of the agenda and a provider of analytical solutions.

8. Key barriers and ways to overcome them

The first barrier is incomplete infrastructure. Many corridors exist in the form of project concepts or partially functioning routes. To transform them into commercially sustainable directions, technical and economic feasibility studies, agreed tariffs, clear sources of financing, unified operational models, and transparent risk allocation are required.

The second barrier is security and the predictability of transit. For business, what matters is not only the length of the route, but also the likelihood of delays, losses, border closures, changes in rules, and additional payments. Therefore, transport policy should include insurance mechanisms, security standards, corridor monitoring, crisis protocols, and regular information exchange among government agencies.

The third barrier is administrative fragmentation. Different documents, uncoordinated customs procedures, weak advance declaration, the absence of mutual recognition of certain certificates, and limited digital interoperability increase the cost of trade. The solution lies in the transition to electronic transport documents, the expansion of the single-window principle, the introduction of risk-based control, and the coordination of technical standards.

The scale of the financial challenge can be assessed through the example of CAREC: in 2021–2024, transport investment under the program amounted to US$8.61 billion, with a significant share of financing provided by international partners. This shows that infrastructure corridors require not only a political decision, but also a sustainable financial architecture^[7][8].

Administrative barriers have a measurable expression. According to CAREC monitoring, in 2022, the average border-crossing time on road corridors was 9.9 hours, while on railway corridors it was 40.6 hours. This confirms that the digitalization of documents, advance declaration, and risk-based control can produce an effect even without the immediate construction of new arterial routes.

The fourth barrier is financial constraints. Infrastructure projects require large capital investments and have long payback periods. A combination of budget funds, loans from international financial organizations, public-private partnerships, guarantees, project financing, and blended-finance mechanisms is needed. At the same time, each project must undergo an assessment of commercial viability, not only political attractiveness.

The fifth barrier is the lack of market information. Companies often do not know potential partners, market requirements, logistics tariffs, certification rules, or available financial instruments. This barrier can be reduced through digital trade platforms, business missions, sectoral catalogues, regular exhibitions, analytical reviews, and consulting centers under chambers of commerce and industry.

The sixth barrier is climate and resource-related risks. Mountainous areas, droughts, floods, changes in glacial runoff, and extreme weather events affect roads, energy, and agriculture. New corridors should be designed with climate resilience in mind, while energy projects should take into account the water balance and the seasonality of demand.

Practical priorities through 2030

9. The Termez Dialogue as an institutional foundation for cooperation

The Termez Dialogue on Connectivity between Central and South Asia can become an important institutional platform for coordinating the interregional agenda. In 2025, the first dialogue was held in Termez, dedicated to the formation of a shared space of peace, friendship, and prosperity. The very choice of Termez emphasizes the city’s practical role as Uzbekistan’s southern hub and as a symbolic point of connection with Afghanistan and South Asia.

The effectiveness of such a format will depend on whether it can move from general statements to the management of a project-based agenda. For this purpose, it would be advisable to structure the dialogue around four permanent tracks: transport and logistics, trade and standards, energy and climate, and investment and human capital. Each track should have a project map, progress indicators, responsible participants, and a mechanism for annual updates.

The participation of business is of particular importance. States can sign framework documents, but real demand for corridors is generated by exporters, importers, carriers, banks, insurance companies, terminal operators, and manufacturing enterprises. Therefore, within the framework of the Termez Dialogue, business sessions, B2B platforms, sectoral presentations, and discussions of specific barriers faced by companies are necessary.

The expert track should serve as an evidence base. It can prepare an annual report on the state of connectivity between Central and South Asia, a corridor-readiness index, monitoring of transportation time and costs, a review of regulatory barriers, analysis of investment projects, and recommendations for governments. In this area, Uzbekistan’s analytical institutions can play a leading role.

The Termez Dialogue is also important as an instrument for involving Afghanistan in economic processes on a pragmatic basis. This is not a matter of political legitimization, but of reducing economic isolation, developing transit procedures, supporting sustainable livelihoods, and creating incentives for stability. This logic corresponds to the interests of all participants, since Afghanistan’s economic predictability directly affects the cost and security of interregional routes.

10. Connectivity and the Sustainable Development Goals

Economic connectivity between Central and South Asia is directly linked to the UN Sustainable Development Goals. The development of energy networks supports SDG 7, the expansion of trade and employment corresponds to SDG 8, the construction of resilient infrastructure is linked to SDG 9, the reduction of spatial isolation contributes to SDG 10, climate resilience relates to SDG 13, and regional coordination and partnerships correspond to SDG 16 and SDG 17.

However, the link with the SDGs does not arise automatically. Infrastructure can promote development, but it can also deepen inequality if benefits accrue only to major actors while local communities bear the costs. Therefore, projects should include environmental assessment, social safeguards, consultations with the population, management of land-related issues, occupational safety measures, and transparent compensation mechanisms.

Special attention should be paid to women, youth, and small enterprises. New corridors create demand for services in logistics, trade, catering, repair, digital support, education, and tourism. If access to these opportunities is opened to local entrepreneurs, infrastructure will become a source of inclusive growth, not merely transit rent.

Climate risk is already becoming an economic factor. According to World Bank estimates, by 2030, nearly 90% of South Asia’s population may be exposed to intense heat, while more than one fifth of the population may face the risk of severe flooding. For Central Asia, the key constraint is water: in Uzbekistan, the volume of water withdrawal significantly exceeds internal renewable resources, and the current water deficit may increase to 7 billion m³ by 2030 and to 15 billion m³ by 2050^[9][10][11].

The climate dimension of connectivity is becoming increasingly important. South Asia and Central Asia are exposed to the risks of extreme weather events, glacier melt, droughts, floods, and tensions around water. Therefore, new roads, railways, power transmission lines, and logistics centers should be designed with long-term climate scenarios in mind. For the energy sector, this means combining electricity trade, energy efficiency, renewable sources, and grid resilience.

From the standpoint of sustainable development, the most promising model is not one of raw-material transit, but one of value-added creation. This implies agro-processing, industrial cooperation, service chains, digital trade, the localization of selected industries, and workforce training. In this case, connectivity is transformed from the movement of goods into a mechanism of structural modernization.

11. Conclusion

Economic connectivity between Central and South Asia is one of the key conditions for the sustainable development of the macroregion. It is capable of expanding sales markets, reducing transport isolation, strengthening energy security, supporting employment, and creating new incentives for regional stability. At the same time, the expected effect depends not on a single project, but on a coordinated package of measures.

The main practical conclusion is the need for a portfolio approach. The trans-Afghan railway, the route through Iran, road corridors, air connectivity, the CASA-1000 and TAPI energy projects, trade digitalization, logistics hubs, and investment platforms should be viewed as mutually complementary elements. Each of them has different implementation timelines, risks, and economic logic; therefore, the regional strategy should ensure redundancy and flexibility.

Uzbekistan has objective advantages for the role of a connector state. Its geography, demographic potential, industrial base, southern hub in Termez, and active foreign economic agenda make it possible to bring together the interests of Central and South Asia.

The Termez Dialogue can become a platform where political will is translated into project-level discipline. For this to happen, it should generate not only declarations, but also a list of projects, indicators, road maps, evaluation mechanisms, and permanent channels of interaction among business, experts, and government agencies.

In the long term, connectivity between Central and South Asia should be oriented not only toward increasing trade volumes, but also toward improving the quality of development. A sustainable macroregion will take shape where infrastructure is connected with institutions, energy with climate responsibility, trade with industrial cooperation, and diplomatic initiatives with evidence-based analysis and practical results.

Muhammad Babadjanov,

Head of Department

at The Institute for Macroeconomic and Regional Studies

under the Cabinet of Ministers of the Republic of Uzbekistan

[1] https://www.worldbank.org/en/programs/south-asia-regional-integration/trade

[2] https://data.worldbank.org/?locations=TJ-UZ-KZ-TM-KG

[3] https://data.worldbank.org/country/south-asia

[4] https://uzembassy.kz/en/article/the-mazar-i-sharif-kabul-peshawar-railway-will-open-up-broad-prospects-for-international-trade

[5] https://www.worldbank.org/en/country/afghanistan/brief/updated-q-a-on-casa-1000-resumption-in-afghanistan

[6] https://www.worldbank.org/en/news/press-release/2023/11/01/additional-financing-for-casa-1000-project-for-the-kyrgyz-republic

[7] https://www.carecprogram.org/uploads/03-CAREC-Transport-Strategy-2030-Midterm-Review-Draft-Report.pdf

[8] https://cpmm.carecprogram.org/2022-report/key-results/

[9] https://www.worldbank.org/en/news/press-release/2025/06/03/climate-resilience-in-south-asia-will-be-private-sector-led

[10] https://data.worldbank.org/country/uzbekistan

[11] https://www.adb.org/news/features/numbers-climate-change-central-asia