"See also CIA activities in Nicaragua"

Ola Tunander, a Swedish author, claimed that U.S. submarines as well as other vessels "frequently" and "regularly" operated in the territorial waters of neutral Sweden in the early 1980s, including Stockholm harbor, as part of an elaborate psychological warfare operation whose target was the Swedish people.It is claimed that U.S. operations were conducted by the National Underwater Reconnaissance Office (NURO) and aspects of the operations were coordinated with the secret NATO "stay-behind" network deployed in Sweden.