Europe's assuming a more active role in its own defense represents the necessary response to current challenges, the Minister of National Defense, Angel Tilvar, told a Tuesday's meeting with NATO Secretary General, Mark Rutte. "With a war at the border and in an unpredictable geopolitical climate, it is essential to demonstrate unity and strategic vision. The attachment to Article 5 of the North Atlantic Treaty, the fundamental principle of collective defense, and to Euro-Atlantic democratic