Russian President Vladimir Putin’s ambitions may not stop at Ukraine, according to a stark warning from newly elected Polish nationalist president, Karol Nawrocki. Speaking alongside Finnish President Alexander Stubb in Helsinki on Tuesday, Nawrocki said Moscow’s actions have reshaped Europe’s security landscape and could spill into further military aggression.

Why Poland is sounding the alarm

Poland, which shares a long border with Russia and its ally Belarus, has been one of NATO’s most vocal critics of the Kremlin since the 2022 invasion of Ukraine. Nawrocki made it clear that Warsaw does not believe in “trusting Putin’s good intentions” and instead sees Russia’s war as part of a wider imperial strategy.

“While waiting for a long-term, permanent peace that is necessary to our regions, we believe that Vladimir Putin is ready to also invade other countries,” Nawrocki said.

This is not the first time Poland has issued such warnings. For years, Polish leaders have argued that Russia’s aggression in Ukraine is a test case for Moscow’s broader ambitions to challenge the post–Cold War security order in Europe.

How Finland and Poland view the threat

Both Poland and Finland are frontline states sharing borders with Russia, making them highly sensitive to any shifts in Moscow’s behavior.

• Finland joined NATO in 2023, ending decades of military nonalignment after Russia’s full-scale assault on Ukraine.
• Poland has emerged as a key NATO hub, hosting U.S. troops, advanced missile systems, and serving as a transit point for Western weapons going into Ukraine.

Stubb echoed Nawrocki’s concerns, accusing Putin of using “delay tactics” in peace negotiations while continuing to destabilize Ukraine. “We try to explain that Putin cannot be trusted,” the Finnish leader said.

Trump’s role in Europe’s security architecture

Nawrocki also emphasized the role of U.S. President Donald Trump, calling him “the only leader of the free world” who could force Putin to negotiate.

The statement underscores a growing reliance on Washington within Eastern Europe. Just last week, Trump welcomed Nawrocki to the White House with a military flyover and pledged to send more American troops to Poland.

Trump has maintained close communication with both Poland and Finland in recent months, as European allies debate how best to end the war in Ukraine while preventing escalation into NATO territory.

Why the warning matters now

Nawrocki’s remarks come as Europe debates its long-term defense posture:

• Germany’s Chancellor Friedrich Merz warned that Putin’s “imperialist plan” would not stop at Ukraine, signaling fears in Western Europe that Moscow may test NATO’s credibility elsewhere.
• Baltic states like Lithuania, Latvia, and Estonia have repeatedly raised concerns that they could be next in line if Russia seeks to reassert control over its former sphere of influence.
• NATO is expanding its deterrence measures, including larger troop rotations, more joint exercises, and investments in missile defense systems.

The Polish president’s warning adds urgency to these discussions, suggesting that Europe must prepare for a conflict that could extend far beyond Ukraine’s borders.

What could be next for NATO?

If Russia were to threaten other countries, NATO’s Article 5 collective defense clause would be put to its most serious test since the alliance was founded in 1949.

Several possible steps are already being considered:

• Increasing the permanent U.S. military presence in Eastern Europe.
• Expanding defense budgets among NATO members, many of which still lag behind the alliance’s 2% GDP spending target.
• Strengthening cyber and hybrid warfare defenses, given Russia’s history of using cyberattacks and disinformation to weaken adversaries before military moves.

For now, Nawrocki’s comments serve both as a warning and a rallying cry—an attempt to keep Europe united in the face of a long, grinding war that shows no signs of resolution.

TL;DR

Polish President Karol Nawrocki warned that Vladimir Putin could invade countries beyond Ukraine, calling on NATO to stay vigilant. Speaking in Helsinki with Finland’s president, Nawrocki said Moscow’s war reflects broader imperial ambitions. He stressed that U.S. President Donald Trump is the only leader who can pressure Putin into negotiations, while European leaders echoed concerns that Russia’s aggression will not stop at Ukraine.