A Vision or a Fantasy? A Critical Assessment of the Feasibility of Syria’s ‘Four Seas’ Corridor Project

Historical Background and the Anatomy of the Project

The role Syria plays as a land bridge is an inevitable consequence of its geographical location. Bordered by Turkey to the north, Jordan and Saudi Arabia to the south, Iraq to the east, and Lebanon and the Mediterranean to the west, Syria has historically been at the heart of Levantine trade. The idea of transforming this ancient reality into a modern geo-economic vision actually dates back to the 2000s. During the era of Bashar al-Assad, at the height of Turkish-Syrian relations in 2009, Turkey first brought a similar concept to the fore under the name ‘Five Seas Strategy’; Assad, for his part, embraced this vision with the statement: ‘When we unite the Mediterranean, the Gulf, the Caspian and the Black Sea, we will become the inevitable crossroads of the entire world.’ The civil war that erupted in 2011 shelved these initiatives for over a decade and transformed Syria from a symbol of global trade into a symbol of a humanitarian crisis.

In December 2024, with the collapse of the Bashar al-Assad regime and the entry of opposition forces led by Hayat Tahrir al-Sham into Damascus, one of the most critical transitional periods in Syrian history began. With Ahmed al-Shara assuming power as transitional president and immediately announcing a ‘zero-problem’ foreign policy, the new Syrian administration has embarked on ambitious initiatives aimed at breaking the country’s international isolation and restructuring the economy. The most notable of these initiatives is the ‘Four Seas’ vision, revived in partnership with Turkey as of April 2026.

Officially known as the ‘Four Seas-Nine Corridors’ initiative, it envisages an integrated transport and energy network linking the Gulf, the Mediterranean, the Caspian and the Black Seas. President Şara first presented the project to the public at the Antalya Diplomacy Forum on 17 April 2026, and subsequently systematised it under the title ‘Four Seas-Nine Corridors’ at an informal summit with EU leaders held in Cyprus on 24 April. The memorandum of understanding signed in Ankara in April 2026 by Turkish Foreign Minister Hakan Fidan and his Syrian counterpart, Esad Hasan Shaybani, has transformed the project into a concrete outcome of the bilateral strategic partnership. This step signals that Turkey-Syria relations are normalising at an extraordinary pace following fifteen years of hostility.

After Hormuz: The Global Context Fuelling the Project

It would be incorrect to reduce the revival of the Four Seas project to a mere diplomatic choreography. Underlying this vision is a structural necessity created by three major global upheavals occurring in quick succession during the 2025–2026 period. The first of these is the de facto closure of the Strait of Hormuz following the attacks carried out by the US and Israel on Iranian nuclear facilities in February 2026. According to UNCTAD’s emergency assessment report dated April 2026, the closure of the Strait has reduced global trade growth from the 4.7 per cent level in 2025 to the expected 1.5–2.5 per cent range for 2026; a daily oil flow exceeding 20 million barrels has been blocked. According to IEA data, this figure corresponds to approximately one-fifth of global crude oil trade. As highlighted in the March 2026 report by the Kiel Institute for the World Economy, every additional week the Strait remains closed drives developing economies into significant, irreversible revenue losses.

The second shock is that the Red Sea route, which has been unstable for years due to Houthi attacks, has now become even more intractable. The Suez Canal’s capacity has fallen to 49 per cent of pre-crisis levels; major shipping companies such as Maersk, CMA CGM and Hapag-Lloyd have been forced to suspend transit through the Strait of Hormuz. For the first time in modern history, two critical straits have effectively closed simultaneously for commercial purposes. The third tremor, which foreshadowed the previous two crises, is the failure to overcome the political and security obstacles to the implementation of the India-Middle East-Europe Economic Corridor (IMEC) since 2023; the Israel-Hamas war and the subsequent Israel-Iran tensions have effectively put the IMEC on hold. When all these developments are considered together, demand for land-based alternative routes has risen dramatically, opening an unprecedented historical window of opportunity for a transit state in a strategic location such as Syria.

The US factor must also be added to this conjunctural framework. According to a document cited by the Saudi-funded Al-Majalla magazine, the US Special Representative for Syria, Tom Barrack, has presented a comprehensive plan to the public for the revival of a vast pipeline network connecting Gulf and Iraqi oil fields to Mediterranean ports and from there to Europe. In this context, it is estimated that the recommissioning of the Kirkuk-Banyas oil pipeline could be completed within 36 months with an investment of approximately 4.5 billion dollars; it is further estimated that Syria could generate annual transit revenues of around 200 million dollars from this pipeline. Following the one-on-one meeting between Trump and Shara in Riyadh in May 2025, the partial lifting of US sanctions indicates that Washington is willing to align itself with Turkey’s move in the great power competition over Damascus – at least at the diplomatic level.

The Project’s Infrastructure Components and Financing Challenges

The Four Seas vision, whilst ambitious, is grounded in concrete infrastructure projects. Upon examining the current and proposed components, three main axes emerge: energy pipelines, rail and road networks, and port connections. From an energy perspective, the most critical project is the rehabilitation of the Kirkuk-Banyas oil pipeline, which was built in the 1950s and was only partially operational even before the civil war. This pipeline, intended to transport Iraq’s crude oil to the Mediterranean coast, would, if implemented, provide significant transit revenue for both Iraq and Syria and reduce dependence on the Strait of Hormuz for the delivery of Gulf oil to Europe. In parallel, the expansion of the Arab Gas Pipeline, which runs from Egypt through Syria to Turkey, and the Qatar-Turkey gas route—which envisages transporting Qatari gas via the Jordan-Syria route to Turkey and from there to Europe—are also on the agenda. The Azerbaijan-Kilis-Aleppo gas pipeline, which is due to come into operation in August 2025, represents the first concrete step in realising the expansion potential of the existing infrastructure.

In terms of road and rail components, the memorandum of understanding signed by the Turkey-Syria-Jordan trio in April 2026 has demonstrated the commitment to reviving the rail corridor linking the Gulf to Europe. According to information provided by experts, this corridor will serve as a land-sea bridge, enabling goods reaching Aqaba Port to be transported northwards by rail, whilst cargo arriving at Turkish ports can be shipped southwards. This project, which could also be interpreted as the modernisation of the legendary Hejaz Railway route that linked the Levant to the Arabian Peninsula prior to the First World War, reflects the first consensus among the countries along the route in over a decade. According to a report by Gulf News, the Turkey-Syria road transport agreement was signed in Istanbul in June 2025; it was announced that the volume of trade between Turkey and Syria reached 1.9 billion dollars in the first seven months of 2025.

However, the project’s financing challenges are perhaps even more decisive than its technical design. Whilst Syrian economist Ziyad Arbaş estimates that the cost of constructing and upgrading the routes will exceed at least 10–15 billion dollars, more optimistic quarters, such as el-Kadi, argue that the total cost of projects under the 4+1 framework will remain below 50 billion dollars. To provide a comparative context, according to the World Bank’s report dated October 2025, the cost of Syria’s overall reconstruction alone exceeds 216 billion dollars; it is noted that this figure does not cover all economic sectors and that the actual cost is likely even higher. In such a scenario, whilst the 28 billion dollars in investment pledged by the Gulf states for Syria in 2025 represents a positive start, it remains rather limited compared to the private financing required for transport corridor infrastructure. As Syrian economist Salman el-Hakim emphasises, no state can finance a project of this scale on its own; complex multilateral financing mechanisms and the involvement of international development banks are required.

Security, Governance and Internal Vulnerabilities

Beyond the issue of financing, perhaps the most critical of the structural obstacles facing the project is Syria’s internal security and governance issues. According to the BTI 2026 country report, over 90 per cent of Syria’s population still lives below the poverty line; clashes between the Turkey-backed Syrian National Army and Kurdish-led forces, alongside the presence of ISIS in the region, continue to create serious security gaps. Although the integration of some SDF elements into special brigades began in January 2026 under the SDF-government agreement, security and governance arrangements in north-eastern Syria remain contentious. According to a briefing presented by UN Special Representative for Syria Najat Rochdi to the UN Security Council in November 2025, the situation in Syria remains ‘extremely serious’, with 16.5 million Syrians in need of humanitarian aid, a figure corresponding to approximately 70 per cent of the population. The IOM’s June 2025 Return Communities Index revealed that 77 per cent of returning Syrians face livelihood challenges.

The lack of institutional capacity is the second critical obstacle to infrastructure development. Over the course of the 13-year civil war, Syria’s engineering and technical workforce has been severely decimated; as Syrian petroleum engineer Gassan el-Rai has highlighted, the shortage of skilled labour remains a key factor severely limiting the implementation of pipeline and railway projects. According to a February 2026 analysis by the Carnegie Endowment for International Peace, although Syrian businesses held assets exceeding $100 billion abroad at the start of 2024, the repatriation of this capital has remained extremely limited due to security uncertainties and a lack of clarity in economic policy. Analyses by the International Crisis Group (ICG) also highlight that events such as the armed conflict in Suwayda in July 2025 and the subsequent mass displacement of over 160,000 people have brought to light serious questions regarding the Syrian government’s capacity to protect infrastructure investments, as well as concrete risks regarding the project’s feasibility.

In this context, a structural problem that could be described as the ‘Transit Route Paradox’ constitutes the project’s weakest link: confidence among potential investors and for transit trade is required for construction to begin; yet, confidence is needed before construction can begin. The difficulty of escaping this circular trap has been documented repeatedly in the academic literature under the heading ‘Ensuring Security in Energy Corridors’. For a transport and energy corridor to be sustainable, there must be consistent security conditions along the route, a predictable legal framework, and guarantees of territorial integrity and governance capacity. Even under the most optimistic scenario, it will take Syria several years to meet these criteria.

Regional Geopolitical Complexity: IMEC, the Iraq Factor and Competing Initiatives

When assessing the feasibility of the Four Seas project, limiting the analysis solely to Syria’s internal dynamics is analytically insufficient; the regional geopolitical environment surrounding the project must also be systematically addressed. Within this context, the Turkish dimension is particularly noteworthy. Behind Turkey’s revival of its vision for a transport corridor through Syria lies not merely regional altruism, but a reactive strategic move in response to the IMEC announced in 2023. The IMEC route connects India to Greece and subsequently to Europe via Saudi Arabia, the UAE and Israel; it largely bypasses Turkey. As aptly highlighted in the INSS analysis, President Erdoğan’s use of the phrase ‘there can be no corridor without Turkey’ immediately upon the project’s announcement, and his emphasis that ‘the most suitable east-west route passes through Turkey’, clearly demonstrates that Ankara is playing for high stakes in this race.

To this strategic backdrop, we must add the Development Corridor project linking Iraq. The approximately 1,200 km railway and road route envisaged by the four-party agreement signed in April 2024 between Turkey, Iraq, Qatar and the UAE—which aims to link the Persian Gulf to the Turkish border—is conceived as a link completing the Four Seas vision. When considered together, these two projects indicate that Turkey is striving to transform the Gulf-Turkey-Europe axis—which the IMEC has overlooked—into a dual-track strategy via both Iraq (Development Corridor) and Syria (Four Seas). However, as highlighted in the Foundation for Defense of Democracies’ analysis dated May 2026, it is extremely difficult for Turkey to compete with IMEC—which enjoys legislative backing from the US Congress (Eastern Mediterranean Gateway Act) and is supported by global capital—using these alternatives.

It is also impossible to overlook the issue of Israel within the project’s regional geopolitical dimension. Şara’s remark that he is open to a form of security agreement with Israel, yet that negotiations are being hampered by Israel’s insistence on maintaining bases on Syrian territory, lays bare the political obstacles the Four Seas corridor must overcome. Bearing in mind that Israel plays a central role in IMEC via the Port of Haifa, the fact that the Syrian route does not include Israel represents both an advantage (the corridor route shortens during periods of regional tension) and a limitation (it becomes more difficult to secure the diversity of access to the Mediterranean provided via Israel). Furthermore, the intense energy competition arising from gas exports to Europe by Russia, Azerbaijan and Algeria highlights the extent to which proposed gas pipelines via the Syrian route will struggle to find a market.

Realism Scale: Which Scenario is Likely?

In light of all these assessments, it is clear that it would be incorrect to answer the question of the ‘Four Seas’ project’s feasibility with a simple yes-or-no response. A more analytically sound approach is to evaluate the project within the framework of short-, medium- and long-term scenarios.

From a short-term perspective (2026–2028), the most realistic steps are the reopening of border crossings, the normalisation of road transport, and the completion of regional infrastructure feasibility studies. Indeed, the expectation that the Turkey-Syria road transport agreement will be signed in 2025 and the route will become operational in 2026 partially justifies this optimism. The commissioning of the Azerbaijan-Kilis-Aleppo gas pipeline in August 2025 also carries a limited but concrete pioneering significance. However, large-scale pipeline projects and railway investments are not realistic targets for this period.

From a medium-term perspective (2028–2033), several critical conditions must be met simultaneously for the project to progress: the relative completion of the political transition process in Syria and the attainment of a sufficient level of institutional capacity; the organisation of international financing and the involvement of development banks; and the continued demand for energy route diversification, even following the reopening of the Strait of Hormuz. Even if all these conditions are met, the most optimistic scenario is the partial rehabilitation of the Kirkuk–Banyas line and the commissioning of some railway connections. When one considers the World Bank’s estimates regarding Syria’s reconstruction—a base cost of $216 billion, of which transport infrastructure constitutes only a fraction—it becomes clear that even this timeframe is extremely optimistic.

When assessed from a long-term perspective (2033 and beyond), the full implementation of the project aligns with the timeframe in which the Syrian economy could genuinely recover, according to UNDP projections: at least a decade. Even within this timeframe, success will remain not merely a technical or financial issue, but a political one; for the competition among regional powers, the alignment of interests within the US-Turkey-Gulf triangle, and the trajectory of Israeli-Syrian relations are among the variables that will determine the corridor’s actual outcome.

Conclusion: A Project Caught Between Structural Opportunities and Structural Constraints

To dismiss the ‘Four Seas-Nine Corridors’ vision as a utopian fantasy is as much of an analytical error as presenting it as a ready-made project to be implemented in the short term. It cannot be denied that the project has emerged within a genuine window of structural opportunity coinciding with the transformation of global energy logistics. The de facto closure of the Strait of Hormuz, chronic instability in the Red Sea and the political obsessions of the IMEC are fuelling a genuine demand for a land corridor; Syria’s geographical position, meanwhile, is unique in terms of its capacity to respond to this demand. The Four Seas project constitutes a strategically timed announcement aimed at seizing this window of opportunity and therefore deserves to be taken seriously.

However, the structural limitations facing the project are just as real as the opportunities. In the shadow of the World Bank’s $216 billion reconstruction estimate, Syria—governed by a transitional government that has not fully established security control and where 90 per cent of the population lives below the poverty line—must first rebuild its fundamental institutional capacity to become a reliable transit state capable of attracting tens of billions of dollars in infrastructure investment. This is not an impossible task; however, it is a time-consuming and fragile process. Whilst Turkey’s presence as a patron may appear to provide a guarantee, it is necessary to view Turkey’s own conflicting interests in the region and its uncompromising stance on the Kurdish issue as a significant variable standing in the way of the project’s linear progress.

In conclusion, the Four Seas Project could serve as a cornerstone for Syria’s reintegration into the international economic system following over a decade of isolation and destruction, provided it is managed correctly. This vision should be defined as a hybrid geopolitical-geoeconomic project that Syria cannot resolve on its own but could partially realise with the support of regional and global powers. The question of feasibility is not simply a matter of ‘yes’ or ‘no’, but must be framed as ‘under what conditions’, ‘at what time’ and ‘with whose support’. The answers to these questions will take shape within the history of Syria’s transition, which is still being written.