DABROWKA, Poland — Poland's Prime Minister Donald Tusk traveled Saturday to his country's border with the Russian region of Kaliningrad to inspect progress in the construction of military fortifications along the eastern frontier, calling it "an investment in peace."
Tusk's visit comes a month before Poland is to take over the rotating presidency of the 27-member European Union. Polish officials say their priority is to urge Europeans to beef up defenses at a time of Russian aggression and with change coming soon in Washington. Some European leaders are concerned that the incoming administration of Donald Trump might be less committed to Europe's defense.
Tusk also proposed this week that Poland and the Nordic and Baltic countries carry out joint navy patrols in the strategically important Baltic Sea, following the suspected sabotage of undersea data cables.
Poland's government and army began building the system dubbed East Shield this year. It will eventually include approximately 800 kilometers (500 miles) along the Polish borders with Russia and Belarus, at a time when Western officials accuse Russia of waging hybrid attacks against the West that include sabotage, the weaponization of migration, disinformation and other hostile measures.
''The better the Polish border is guarded, the more difficult it is to access for those with bad intentions,'' Tusk said at a news conference near the village of Dabrowka as he stood in front of concrete anti-tank barriers.
Poland has been at the mercy of aggressive neighbors over the past centuries and has become a leading European voice for security at a time when France and Germany are weakened by internal political problems. Poland aims to spend 4.7% of its gross domestic product on defense next year, making it one of NATO's leaders in defense spending.
Tusk's government estimates that the strategic military project will cost at least 10 billion zlotys ($2.5 billion). Poland's borders with Russia, Belarus — as well as Ukraine — are the easternmost external borders of both the European Union and NATO.
Tusk said he expected the East Shield to eventually be expanded to protect the small Baltic states of Estonia, Latvia and Lithuania.