 This was done on Dagen H, in spite of the negative result of a referendum in 1955.During the Cold War, Sweden maintained a dual approach, publicly the strict neutrality policy was forcefully maintained but unofficially, strong ties were kept with the U.S. and it was hoped that the U.S. would use conventional and nuclear weapons to strike at Soviet staging areas in the occupied Baltic states in case of a Soviet attack on Sweden.Over time and due to the official neutrality dogma, fewer and fewer Swedish military officials were aware of the military cooperation with the west, making such cooperation in the event of war increasingly difficult.