During the early Cold War era
During the early Cold War era, Sweden combined its policy of non-alignment with a low profile in international affairs, although it also pursued a security policy based on strong national defence to deter attack. At the same time, the country maintained relatively close informal connections with the Western bloc, especially in the realm of intelligence exchange. In 1952, a Swedish DC-3 was shot down over the Baltic Sea by a Soviet MiG-15 jet fighter. Later investigations revealed that the plane was actually gathering information for NATO. Another plane, a Catalina search and rescue plane, was sent out a few days later and shot down by the Soviets as well. Olof Palme, the former prime minister of Sweden, visited Cuba during the 1970s and showed his support for Cuba in his speech.