As winter approaches, a familiar chill is spreading through European capitals—not just from the cold, but from a growing realization that President Vladimir Putin's most viable conventional route to victory in Ukraine may run through the Baltic states. The heavily fortified Donbas region remains a fortress, and despite Moscow's pre-election boasts of seizing 5,300 square kilometers of Ukrainian territory, the Institute for the Study of War reports the actual gain is a mere 147.7 square kilometers—at a staggering cost of over 314,000 Russian casualties this year, according to Ukrainian estimates.
That brutal arithmetic leaves Putin cornered, and cornered leaders are unpredictable. With Kyiv refusing to cede territory—and rightly so, as any such concession would be political suicide for President Volodymyr Zelensky—the Kremlin is searching for alternate pressure points. One increasingly likely option: a direct assault on NATO's eastern flank, specifically Lithuania, Latvia, or Estonia, to shatter alliance unity and force Europe to rethink its support for Ukraine.
Moscow has already been waging an asymmetric war against the EU and NATO, with incidents like the armed drone discovered near a Ukrainian cargo jet at Halle Airport in Leipzig, Germany. Berlin blamed Russia; Putin dismissed it as a fabrication. But his unusually direct response signaled something more: a willingness to escalate hybrid attacks against European soil, and a desire to make sure the message was received.
European leaders are finally waking up. French President Emmanuel Macron convened an emergency meeting last Friday, warning that “no one is safe” given Putin's intent to “intimidate us and break our support for the Ukrainians.” This follows years of Russian sabotage, espionage, assassination attempts, and election meddling across the continent—a grey-zone war that has so far yielded only modest gains for Moscow.
Hungary and Slovakia have been effectively cowed into submission through energy blackmail, repeatedly blocking military aid and NATO/EU accession talks for Ukraine. But those are speedbumps, not strategic victories. To truly sever European support, Putin needs a larger disruption—and a Baltic strike could be just that.
Slovak Prime Minister Robert Fico has already played into Moscow's hands by publicly questioning whether his country would honor Article 5, NATO's collective defense clause. Such rhetoric plants a target on the Baltics and potentially Poland, suggesting that a Russian attack might not trigger a unified response.
Moscow doesn't need a full-scale invasion. A large-scale drone and missile barrage, perhaps preceded by a false-flag incident, could suffice. Putin would bet on NATO paralysis, leaving the alliance to debate rather than act—and in that vacuum, European support for Ukraine could crumble.
Polish Prime Minister Donald Tusk and Czech security chief Michal Koudelka have both voiced alarm. Finnish President Alexander Stubb, however, cautions against overreaction. That caution is misplaced. Europe must not wait for the worst.
To deter Putin, Europe should go on the offensive. One bold move: declare an active defense zone over western Ukraine, vowing to shoot down any Russian drone or missile before it approaches European airspace. That would signal resolve and raise the cost of aggression.
Putin is expanding his kinetic war to Europe. If the West fails to respond in kind—and in advance—the Baltics could become the next flashpoint. The question is not whether the Russians are coming, but whether Europe is ready to stop them before they arrive.
