Finland, Estonia and the War in Ukraine
24 August 2026: This morning as we prepare to fly home from
Helsinki, having taken the ferry yesterday for a day trip to Tallinn, I asked “Steve”, our AI assistant, the following:
Q. How has the war in Ukraine impacted Finland, Estonia and the ferry between them?
A. Quite profoundly. What struck you on the Helsinki–Tallinn crossing yesterday—an easy, almost domestic-feeling two-hour ferry trip—is now actually one of the important transport links inside NATO’s northeastern flank. The war has changed the strategic meaning of the Gulf of Finland even though, for an ordinary passenger, the crossing still feels remarkably normal.
Finland, probably the biggest foreign-policy change since World War II:
For Finland, Russia’s full-scale invasion of Ukraine destroyed the postwar assumption that Finland could remain militarily non-aligned while maintaining a pragmatic relationship with Moscow. Finland applied to NATO in May 2022 and formally joined on 4 April 2023. NATO itself explicitly says the change in Finnish policy was triggered by Russia’s invasion.
That is an extraordinary historical reversal. Finland shares roughly 1,300 km / 800 miles of border with Russia, and for decades Helsinki carefully balanced Western integration with a working relationship with its enormous eastern neighbor. Today that border is essentially closed to ordinary traffic. Finland progressively closed its crossings in late 2023 after accusing Russia of deliberately directing migrants toward the frontier as a form of pressure; the closure remains in force.
The economic effects are noticeable too. Russian tourism—once extremely important to eastern Finland and Helsinki—has largely disappeared. Russian airspace is closed to Finnish airlines, making Asian routes substantially longer; for example, Helsinki–Tokyo went from roughly nine hours to around fourteen.
And Finnish defense thinking has become considerably harder-edged. Russia is now officially regarded as Finland’s principal security threat, while Russian military infrastructure is being expanded again near Finland’s frontier.
Estonia: the threat feels even more immediate:
Estonia’s psychology is somewhat different because Estonia never had Finland’s postwar neutrality. It has been a NATO member since 2004, and Russia’s occupation of Estonia from 1940–1991 remains within living memory.
So Ukraine has largely confirmed what Estonians had already been warning Western Europe about: Russia is capable of invading and attempting to absorb a neighboring state.
The response has been enormous for such a small country. Estonia plans to spend about 5.4% of GDP on defense in 2026, increasing the defense budget from €1.7 billion to roughly €2.4 billion. That is one of the highest proportions in NATO.
Ukraine is also much more visibly present in Estonia socially. Estonia accepted large numbers of Ukrainian refugees relative to its population; Ukrainians continue to constitute a significant portion of immigration—about 4,000 Ukrainian citizens arrived in Estonia during 2025 alone, although the flow has declined from the first years of the invasion.
And Estonia is intensely concerned about Russian cyberwarfare, sabotage, intelligence operations and influence campaigns—hardly surprising given that roughly a quarter of Estonia’s population is Russian-speaking and the Russian border is only about 200 km east of Tallinn.
And then there is the Gulf of Finland:
This is where your ferry ride becomes especially interesting.
The Helsinki–Tallinn ferry route itself has not been curtailed by the war. Quite the opposite: it continues to operate as an extraordinarily busy civilian corridor. Tallink currently advertises six daily Helsinki–Tallinn departures year-round.
But the waters through which you sailed are now one of Europe’s most closely watched maritime zones.
Look at the geography:
All Russian ships traveling between St Petersburg and the open Baltic Sea have to pass through the Gulf of Finland—essentially between Finland and Estonia.
Before 2022 that was mostly a commercial-navigation fact.
Today it is a strategic fact.
Russia’s “shadow fleet”
A huge new issue is Russia’s so-called shadow fleet: often elderly tankers with opaque ownership and insurance arrangements used to transport Russian oil while circumventing Western sanctions.
Those ships regularly transit the same Gulf of Finland used by the Helsinki–Tallinn ferries.
Tensions became especially visible in 2025 when Finnish officials said Russia had begun using military aircraft and other forces to protect shadow-fleet tankers passing through the gulf. Finland’s defense minister described this as a significant new development.
So while your Tallink ferry is making its completely ordinary two-hour run, there may simultaneously be sanctioned or suspected Russian-linked tankers, Finnish and Estonian coast-guard vessels, NATO surveillance assets and Russian military activity elsewhere in the same relatively confined body of water.
The undersea infrastructure problem:
This may actually be the most important change to the ferry corridor.
The seabed between Finland and Estonia contains critical infrastructure:
- telecommunications cables
- electricity interconnectors
- the Balticconnector natural-gas pipeline
- other data links connecting Finland with continental Europe.
Since the invasion, several Baltic cables and pipelines have been damaged under suspicious circumstances, dramatically increasing concern about sabotage and hybrid warfare.
One particularly striking incident occurred on 31 December 2025, when the Helsinki–Tallinn telecom cable operated by Elisa was damaged. Finnish authorities seized the cargo vessel Fitburg, which had sailed from St Petersburg; investigators found its anchor chain hanging in the water.
That means the sea lane beneath your ferry isn’t merely transporting passengers. It sits directly above infrastructure that both Finland and Estonia now regard as national-security assets.
GPS interference:
There is another invisible effect passengers generally wouldn’t notice: GPS/GNSS interference.
Russian electronic warfare has repeatedly disrupted satellite-navigation signals around Finland and the Baltic states. Maritime navigation is protected by redundant systems, radar, terrestrial navigation and professional bridge crews, so this does not mean the Tallinn ferries are unsafe.
But it has become part of everyday maritime and aviation planning around the eastern Baltic.
Tallink itself became involved in the refugee response:
There’s an especially interesting maritime footnote.
After the invasion began, Tallink turned the ferry Isabelle into accommodation for Ukrainian refugees. Beginning in April 2022 she was berthed in Tallinn’s Old City Harbour as temporary housing. Tallink itself noted that the war created significant uncertainty in Baltic travel and initially discouraged passengers while the company was still recovering from Covid.
So the ferry company you used yesterday was directly involved in Estonia’s humanitarian response to the war.
The remarkable thing is how normal it feels:
And this is perhaps the part worth emphasizing.
You sailed yesterday from one NATO capital to another across a body of water only a few hundred kilometres from Russia, amid:
Russian shadow-fleet traffic → NATO surveillance → subsea-cable security → electronic interference → dramatically increased Finnish and Estonian defense preparations.
Yet you drank coffee, wandered around the ship, watched families going on Sunday outings and arrived two hours later in Tallinn.
That normality is deliberate. Neither Finland nor Estonia considers itself at war. Their strategy is essentially to make the region so well defended and so resilient that the war stays in Ukraine rather than spreading into the Baltic.
For Finland especially, however, the transformation is historic: the country you just visited is no longer the carefully neutral buffer state that existed during most of our lifetimes. Since 2023 Finland and Estonia are formally military allies, and the Helsinki–Tallinn sea corridor now connects two countries on the same NATO defensive front.
Alfredo followed up with this:
Q. What about the economic impact?
A. Economically, the war has hit Finland harder than Estonia in absolute terms, but Estonia has felt some sharper inflationary and trade shocks because of its size and proximity.
Finland lost a large amount of Russia-related commerce almost overnight: cross-border shopping and tourism from Russians collapsed, eastern Finnish towns lost visitors and retail spending, and companies that had depended on Russian trade had to reorient. Energy was another major shock. Finland cut its dependence on Russian electricity and gas, which improved strategic security but initially pushed costs higher and required new infrastructure and alternative suppliers. Finnair was also badly affected because Russian airspace closures destroyed the geographic advantage that had made Helsinki a highly efficient hub between Europe and East Asia; flights to Japan and elsewhere became longer and more expensive.
Estonia’s economy was hit especially hard by the 2022–24 inflation and energy-price surge. Estonia had already been reducing dependence on Russian energy, but the war accelerated the process. Food, heating, electricity and transport costs rose sharply, squeezing households and businesses. Trade with Russia and Belarus shrank dramatically, while defense spending increased. For a country of only about 1.4 million people, the costs of absorbing Ukrainian refugees, strengthening borders and expanding defense are significant—even though EU support offsets some of that burden.
For the Helsinki–Tallinn ferry trade, the impact is more mixed. The route did not lose its fundamental economic purpose: Finns still travel to Estonia for leisure, shopping and services, Estonians commute or work in Finland, and freight moves between the two countries. In fact, the corridor has become more strategically important because Finland now depends more heavily on westward and southward connections through the Baltic rather than eastward links to Russia.
There have, however, been some negative effects: higher marine fuel and energy costs, inflation in wages and supplies, weaker consumer spending at points during the post-2022 downturn, and the loss of some Russian-origin tourism. Ferry companies also face higher security, insurance and operational risks because of Baltic tensions and damage to subsea infrastructure.
One especially important economic point is that the ferry is not merely a tourist service. The Helsinki–Tallinn route is effectively part of Finland’s supply chain to continental Europe. Trucks can travel by ferry from Helsinki to Tallinn and then south through Estonia, Latvia, Lithuania and Poland. Since Finland has no land border with the rest of the EU except through Sweden and Norway—and its Russian border is effectively unusable—the Baltic crossings have become more valuable economically.
So the irony is that the war has made the region poorer in some respects—less Russian trade, higher defense and energy costs—but has made the Finland–Estonia economic relationship considerably more important.
