Dirk Stikker, Minister of Foreign Affairs, signs the North Atlantic Treaty for The Netherlands, April 4, 1949. Dirk Stikker, Minister of Foreign Affairs, signs the North Atlantic Treaty for The Netherlands, April 4, 1949. SHARE: Download: Full Size (1.6 MB) Tags: Photo Essays Credit: VIRIN: 636932-D-NOG61-866.jpg Photo Gallery