Sweden recalled its ambassador to the Soviet Union after accusing Moscow of operating six submarines inside Swedish waters in October. The Swedish government formally protested the intrusions after a government report detailed Soviet submarine movement near the high-security Musko naval base on the Baltic Sea. Their activities were part of a wider Soviet operation along the Swedish coast, the report added. Relations between the two countries had cooled initially in October 1981, when a Soviet submarine became stranded in Swedish waters. This report is expected to strain ties even more.