Soviet Union intelligence operations

KGB disinformation campaign

Audio bug formerly hidden in Moscow US embassy

counterintelligence operation of the State Political Directorate (GPU) of the Soviet Union

1980s Soviet military intelligence program

World War II intelligence operation by the USSR

1921 fabricated Soviet monarchist conspiracy

KGB/DGI propaganda campaign

1964 Eastern Bloc disinformation operation involving fake Nazi-era documents

Soviet disinformation campaign to discredit the Vatican

a document claiming to be a classified appendix to a U.S. Army Field Manual

World War II spy ring