For most of the modern era, the principal arteries connecting Europe and Asia ran either north through Russia or south through the Middle East and the world’s busiest maritime chokepoints. War, sanctions and political fragmentation are now redrawing that map, increasing the value of a route once treated as a useful alternative rather than a strategic necessity.

The Middle Corridor, linking China and Central Asia through Kazakhstan, across the Caspian Sea to Azerbaijan and onwards through Georgia and Turkey to Europe, is experiencing a surge in traffic as companies search for supply chains that are not simply cheap but dependable.

At its geographical hinge sits Azerbaijan. That role has become more conspicuous as disruption spreads across Eurasia. Western carriers have largely avoided Russian airspace since Moscow’s invasion of Ukraine, while conflict in the Middle East has repeatedly disrupted aviation and maritime routes. Azerbaijani and Georgian airspace became an important Europe-Asia aviation corridor earlier this year as closures across Iran, Iraq and the Gulf forced airlines northwards. 

More recently, commodity traffic through the Strait of Hormuz, through which about a fifth of global oil supply moved before the US-Israeli conflict with Iran began in February, has fallen dramatically. Preliminary data showed only two commodity ships crossing on September 21, compared with a pre-conflict average of about 125 large commercial vessels a day, although some vessels may be sailing with transponders switched off. 

Against that backdrop, the return of the ancient Silk Road is looking less like an exercise in historical branding and increasingly like a commercial response to geopolitical risk.

The evidence presented at the Azerbaijan International Investment Forum in Baku suggests that the shift is already under way. Yerlan Koishibayev, deputy chairman of Kazakhstan Temir Zholy, the national railway operator, said container transit along the Middle Corridor reached roughly 40,000 twenty-foot equivalent units (TEU) in 2025, up 15% year-on-year.

In the first eight months of 2026, volumes had already reached 44,000 TEU, 58% higher than during the corresponding period a year earlier. More strikingly, he said Chinese container transit on the route had increased 38-fold in three years. 

The geography of those flows is also widening. Cargo that once originated predominantly around Xi’an is increasingly coming from Chinese manufacturing centres including Yiwu, Chongqing, Chengdu, Wuhan and Shenzhen, suggesting that the route is starting to find a place in the logistics strategies of large exporters rather than surviving on politically sponsored demonstration trains.

“From Kazakhstan’s perspective, the development of the Middle Corridor is not simply about creating an alternative transport route,” Koishibayev told the forum. “It is about building a reliable, competitive, resilient, integrated logistics system connecting China, Central Asia, Caspian region and Europe.”

The World Bank reaches a similar conclusion. It estimates that sufficient investment and efficiency improvements could triple trade flows and halve journey times by 2030, while emphasising that the corridor’s importance lies as much in stimulating trade between Kazakhstan, Azerbaijan and Georgia as in carrying Chinese freight to Europe. 

The Middle Corridor’s longer-term significance will depend on whether it becomes an economic region rather than simply a railway line.

For much of the post-Soviet period, Central Asia’s transport, pipeline and commercial networks remained oriented north towards Russia. That system has progressively weakened as the five Central Asian republics have developed closer links with each other and sought additional routes towards China, Europe, Turkey and the Gulf.

Azerbaijan’s integration into the annual consultative meetings of Central Asian leaders has given that process a new political expression, leading some regional analysts to describe the traditional C5 of Kazakhstan, Uzbekistan, Kyrgyzstan, Tajikistan and Turkmenistan as an emerging C6 with Azerbaijan.

As an earlier IntelliNews analysis put it, Azerbaijan is “the door through which Central Asia connects to Europe”. 

Speaking separately at the investment forum, President Ilham Aliyev said Azerbaijan now considered itself economically and politically part of a broader Central Asian space despite lying geographically in the South Caucasus. “Politically, and from economic and transportation point of view, we are part of the big Central Asia region,” he said. Aliyev expects transit freight through Azerbaijan to reach about 16mn tonnes this year, with a target of 25mn tonnes by 2030, potentially more. 

Yet geography alone does not create a viable corridor. Freight travelling from China to Europe must cross several national borders, change rail and sea modes at the Caspian, negotiate different tariff systems and depend on ferries whose schedules can be affected by weather and port congestion.

Much of the current effort is therefore focused less on constructing another railway than on making several existing national networks behave like one.

Koishibayev said Chinese, Kazakh, Azerbaijani and Georgian railway companies had created a joint structure intended to offer customers a “single operator” and “single window”, including common digital systems and clearer responsibility for shipments.Kazakhstan,  Azerbaijan and Georgia are also working on a common roadmap covering infrastructure, tariffs, digitalisation and the Caspian maritime segment.

Current China-Europe transit along the route takes about 13-17 days, Koishibayev said, compared with 32-45 days by sea. The ambition is to reduce the overland journey to a predictable 10-12 days. 

The World Bank this year backed the effort with an $846mn guarantee intended to mobilise $1.41bn in commercial financing for Kazakhstan’s rail network, with the broader programme designed to triple freight capacity and halve end-to-end transit times by 2030. 

Physical bottlenecks nevertheless remain formidable. Falling Caspian water levels have required Kazakhstan to dredge its ports, while Koishibayev said the country was expanding its dedicated container fleet and plans to deploy 20 vessels by 2028, including ships being built at Baku’s shipyard.

The commercial opportunity is also becoming much broader than containers. Energy infrastructure increasingly follows the same geography. Azerbaijan already connects Caspian hydrocarbons to Turkey and Europe through the Southern Gas Corridor. Baku, Astana and Tashkent are now pursuing an electricity connection across the Caspian that could eventually allow renewable power generated in Central Asia to flow westwards through Azerbaijan towards European markets.

Bassem Tadros, senior vice-president at Abu Dhabi-backed energy investor XRG, told the forum that the Caspian should be viewed not as a barrier separating regions but as infrastructure waiting to connect them. “Having the regional resources gives this region relevance,” he said. “Having the infrastructure in place that exploits and develops these resources gives this region reliability.”

XRG has already invested on both sides of that emerging system. Its first major international acquisition was a stake in Azerbaijan’s Absheron gas field, and it has since acquired an interest in Southern Gas Corridor infrastructure while pursuing opportunities elsewhere in Central Asia.

The Middle Corridor could eventually encompass electricity cables, fibre-optic links, hydrocarbons, critical minerals and digital data alongside conventional freight. In that sense, it is becoming less a transport route than the physical backbone of an emerging economic relationship between Central Asia, Azerbaijan, Turkey and Europe.

There are reasons for caution. The spectacular percentage growth in container volumes starts from a small base, and maritime freight will remain vastly larger and cheaper for many categories of goods. Governments along the corridor must still harmonise customs procedures, tariffs and digital documentation, while private investors will demand bankable projects rather than geopolitical slogans.

Ziya Aliyev, vice-president of the Black Sea Trade and Development Bank, told the forum that estimates put the investment gap for the corridor at $30bn-50bn, beyond what governments alone could comfortably finance. That makes multilateral development banks and institutional investors critical, but only if projects can demonstrate predictable revenues and commercially credible sponsors. 

The geopolitical tailwind may also change. Aliyev himself cautioned that Azerbaijan cannot build its transit model on permanent conflict. “If geopolitical situation in our end change and go back to as it was five years ago, still we should be attractive for suppliers,” he said. 

That may be the Middle Corridor’s real test. War and sanctions have given it strategic relevance; only lower costs, faster customs and predictable transit will give it commercial permanence.

For now, however, the balance of Eurasian geography is shifting. The northern routes are politically compromised, southern maritime chokepoints have demonstrated their vulnerability and Central Asian states are increasingly behaving as a more coherent economic group.

The Silk Road is returning not because the world has become more connected, but because it has become less so. And the more fractured the map becomes, the more valuable Azerbaijan’s position at the point where Central Asia turns west is likely to be.