President Donald Trump faced mounting pressure on Sunday from congressional Democrats and European allies to clarify his commitment to Ukraine. On Saturday, he appeared to walk back a pledge on Patriot missile production at Camp David, drawing swift criticism in Washington.

Trump said the United States had not committed to helping Ukraine build Patriot missile systems, softening earlier assurances given to Kyiv. His remarks, delivered at the presidential retreat in Maryland, generated confusion among NATO partners about the scope of American military support.

Senior Democrats on the Senate Foreign Relations Committee said they would seek details from the administration on the status of weapons transfers and co-production arrangements. Officials in Berlin and Warsaw privately sought reassurances through diplomatic channels, according to people briefed on the exchanges.

The White House defended the president's position, with a spokesperson saying Trump remained committed to a negotiated end to the war while protecting American manufacturing capacity. Ukrainian officials, who have repeatedly requested air-defense systems to counter Russian strikes, expressed concern that the shift could weaken Kyiv's defenses ahead of an expected autumn offensive.

The dispute underscored persistent tensions between Trump's transactional approach to alliances and the expectations of NATO members who rely on US security guarantees. Analysts at the Center for Strategic and International Studies said the mixed signals risked eroding allied confidence at a critical moment in the conflict.