Donald Trump’s widening rift with NATO is triggering alarm across Europe after the Pentagon abruptly canceled the deployment of 4,000 US troops to Poland — a key frontline NATO state bordering the Ukraine conflict zone. The move comes amid broader US troop reductions in Europe, including plans to withdraw thousands more soldiers from Germany. Critics warn the cuts could weaken NATO’s eastern defenses and embolden Russia at a time of rising tensions across the continent. As Poland, Romania, and Baltic allies demand stronger deterrence against Moscow, questions are now growing over America’s long-term military commitment to Europe under Trump’s leadership.