NATO leaders in Eastern Europe express growing concern and uncertainty about continued US support against a potential Russian attack amid unpredictable US policy under President Donald Trump's second term. The article outlines multiple events and statements from 2025 through mid-2026, illustrating the erosion of trust and the possibility of a US strategic shift away from European security. Eastern European countries including Poland and the Baltic states grapple with the realities of possible American disengagement, while efforts are underway within Europe to strengthen defense autonomously, even as US commitments remain crucial. Key incidents include ambiguous US official responses to direct questions about troop support, a drone incursion into Polish airspace by Russia in 2025, US troop deployment cancellations and reversals influenced by Trump’s political alliances, and tensions within NATO forums over financial contributions and strategic priorities. The upcoming NATO summit in Ankara in July 2026 is seen as a critical juncture. European leaders are cautious about openly criticizing the US president but private doubts and contingency planning are increasing. The article highlights the psychological, diplomatic, and military complexity facing NATO in maintaining transatlantic unity and deterrence against Russia.

NATO leaders in Eastern Europe express growing concern and uncertainty about continued US support against a potential Russian attack amid unpredictable US policy under President Donald Trump's second term. The article outlines multiple events and statements from 2025 through mid-2026, illustrating the erosion of trust and the possibility of a US strategic shift away from European security. Eastern European countries including Poland and the Baltic states grapple with the realities of possible American disengagement, while efforts are underway within Europe to strengthen defense autonomously, even as US commitments remain crucial. Key incidents include ambiguous US official responses to direct questions about troop support, a drone incursion into Polish airspace by Russia in 2025, US troop deployment cancellations and reversals influenced by Trump’s political alliances, and tensions within NATO forums over financial contributions and strategic priorities. The upcoming NATO summit in Ankara in July 2026 is seen as a critical juncture. European leaders are cautious about openly criticizing the US president but private doubts and contingency planning are increasing. The article highlights the psychological, diplomatic, and military complexity facing NATO in maintaining transatlantic unity and deterrence against Russia.