European officials from countries bordering Russia have expressed serious concerns regarding U.S. President Donald Trump's threats to withdraw from NATO. During a recent visit to Eastern Europe, officials argued that U.S. involvement in NATO remains crucial for regional stability, especially in light of rising tensions with Russia and ongoing conflicts in the Middle East. Polish Deputy Foreign Minister Marcin Bosacki stated that while the U.S. is adjusting its military presence, it is vital for European allies to maintain open communication with the U.S. to ensure collective security. Estonian officials, including Foreign Affairs Committee Chairman Marko Mihkelson, linked the security of Eastern Europe directly to the conflict in Ukraine, suggesting that a strong NATO presence is essential to deter Russian aggression. Mihkelson noted that Estonia is committed to increasing its defense spending, currently at 5.4% of GDP, to strengthen NATO's collective defense. Finnish officials also underscored the importance of securing the Arctic against Russian military expansion, which poses a direct threat to U.S. security. Overall, the officials warned that any U.S. retreat from NATO would embolden adversaries and jeopardize the alliance's effectiveness.