As President Trump casts doubt on U.S. alliances, Poland needs to double its military manpower and consider more destructive weapons, Prime Minister Donald Tusk said.

Poland's President Andrzej Duda proposed enshrining defence spending of at least 4% of GDP in the constitution on Friday, while the government backed giving military training to all adult males as Warsaw readies itself for threats from Moscow.

The Polish President visited NATO's headquarters on Thursday at the invitation of Secretary General Mark Rutte. View on euronews

NATO's newest member Sweden plans to contribute up to eight Jas Gripen fighter jets to the defence alliance's air policing in Poland, Foreign Minister Maria Malmer Stenergard said on Thursday.

Poland, with over 4% of its GDP spent on defense in 2024 and plans to reach 4.7% in 2025, has long been ahead of the curve in this regard. Its transition from a Soviet-era military framework to a leading military power within NATO through modern defense infrastructure after the Warsaw Pact’s collapse was challenging.

Jets were scrambled following what the head of the Ternopil regional administration, Vyacheslav Nehoda, said was an attack on a "critical industrial facility" overnight

Alliance member states have been sounding the alarm about Europe's collective security amid Russia's full-scale invasion of Ukraine.

Poland's President Andrzej Duda aims to constitutionally set defence spending at 4% of GDP. Following Russia's invasion of Ukraine, Poland already leads NATO in defence spending. Prime Minister Donald Tusk proposes military training for all adult males,

The president has discussed possibly favoring members of the alliance that spend a set percentage of their GDP on defense, sources told NBC News.