Spanish public views on national security and the United States diverge in important ways from opinion in other NATO member states. The future success of the alliance, especially as it expands eastward, will depend to a large extent on its ability to accommodate opinion diversity such as that evident in Spain.
United States. Department of State. Office of Research. Spain's Not-Quite-European Security View. By Mark Teare. Washington, D.C.: August 29, 2000. (Opinion Analysis M-154-00).