Polish Prime Minister Donald Tusk in a visit to his country's border with the Russian exclave of Kaliningrad, called the development of military fortifications there and along the frontier with Kremlin ally Belarus "an investment in peace." "Everything we are doing here is meant to deter and discourage any potential aggressor, which is why this is truly an investment in peace," Tusk told a news conference on November 30. "We will spend billions of zlotys on this -- but right now all of Europe is watching with great satisfaction and will support these investments and our actions if necessary." The project -- called East Shield -- is designed to eventually protect 800 kilometers along the NATO nation’s borders with Russia and Belarus.