The Bonn–Paris conventions ended the allies' occupation of West Germany, and were ratified in part on the condition that West Germany join NATO, which it did in 1955. Though initially isolationist, Spain under Francisco Franco was staunchly anti-Communist, and bound by regular defence agreements with NATO countries. After its transition to democracy, Spain came under pressure to normalize its European relations, including joining NATO, which it did in 1982. A referendum in 1986 confirmed popular support for this.