Spain's flag joins those of other NATO nations in front of the NATO headquarters building in at NATO Headquarters in Brussels, Belgium, June 5, 1982, in the ceremonies celebrating Spain's accession to NATO. Spain's flag joins those of other NATO nations in front of the NATO headquarters building in at NATO Headquarters in Brussels, Belgium, June 5, 1982, in the ceremonies celebrating Spain's accession to NATO. SHARE IMAGE: Download Image: Full Size (2.43 MB) Tags: Photo Essays Photo By: VIRIN: 294134-T-ABH00-946.jpg Photo Gallery