Trump says U.S. would defend Poland and Baltic states if Russia escalates, as NATO incursions raise tensions

President Donald Trump on Sunday said the United States would defend Poland and the Baltic states if Russia's aggressions escalate, speaking with reporters on the White House lawn before leaving for the Arizona funeral of conservative commentator Charlie Kirk. "Yeah, I would. I would." He also said he had been briefed on the latest tense developments involving Estonia, adding, "Yeah, we don't like it."

Estonia said NATO had intercepted three Russian MiG-31 fighter jets that crossed into its airspace and lingered for about 12 minutes. Russia denied the incursion, saying flights were "in strict accordance with international rules" and did not violate borders. The incident followed Poland's consultations with NATO after drones and aircraft breached its airspace the week prior. The episode came amid a broader sequence of airspace breaches linked to Russia's ongoing campaign in and around Ukraine, which has involved incursions over Poland and other NATO members as allies discuss collective defense options.

Poland said 19 to 23 Russian drones entered its airspace on Sept. 9, with at least four shot down during a broader Russian attack in western Ukraine. Days after that, Romania claimed that a Russian drone entered its airspace as well. All three countries are members of NATO, and the cluster of incidents has heightened discussions about the alliance's Article 5 collective-defense commitment. NATO officials have said they are monitoring the situation and coordinating with member states as flights and drones continue to appear near European borders. The episodes underscore the volatility of the security environment on NATO's eastern flank and the potential risk to allied pilots and civilians alike.

The Baltic states—Estonia, Latvia and Lithuania—have repeatedly pressed Congress to continue funding military assistance under the Baltic Security Initiative, arguing that sustained support is essential as Moscow's activities in the region remain unsettled. In a joint letter, the parliaments of the three countries urged lawmakers to protect funding in the fiscal year 2026 Defense Appropriations Bill and its authorization in the National Defense Authorization Act, highlighting the strategic importance of allied deterrence and modernization programs amid ongoing tensions with Russia.

All three countries are NATO members, which means they could invoke Article 5 if attacked and trigger a coordinated response from the alliance. The airspace incidents have coincided with broader U.S. pressure on NATO partners to increase sanctions and reduce dependence on Russian energy, as Washington seeks a more unified approach to deterring Moscow. Trump has long pressed allies to escalate sanctions on Russia and to align more closely with U.S. policy on Russia’s war in Ukraine, arguing that synchronized actions would strengthen deterrence and burden-sharing among allies. Officials have noted that the administration has been seeking stronger allied commitments on defense spendings and interoperability, including capabilities tied to air and missile defense.

In parallel, the notes describe renewed attention to diplomacy and public messaging around Ukraine. They indicate that Trump has previously met with Kremlin leader Vladimir Putin to discuss a path toward ending the war in Ukraine, a development that has drawn scrutiny from observers who want to see a clear, transparent strategy from Washington about the path to peace and the level of cooperation with Moscow. The Kremlin's ongoing campaign in Ukraine and the heightened tempo of Russian air activity near NATO territory have amplified concerns about regional stability and the risk of miscalculation. Trump’s remarks on Sunday occurred as he prepared to attend the funeral service in Arizona, underscoring the political symbolism of the moment amid persistent questions about the United States' commitment to its European allies.

As the White House monitors a series of airspace incursions and allied responses, experts say the situation reinforces the delicate balance between deterrence, diplomacy and alliance politics. NATO members have emphasized the need for sustained funding, joint exercises, and enhanced air defense to deter potential escalation and to reassure partners along the alliance's eastern edge. With a presidential posture that mixes pledges of defense with calls for tougher sanctions, the administration appears focused on projecting resolve while navigating the complexities of alliance politics, energy security, and the broader strategic contest with Russia.