1961 in military history

barrier constructed by the German Democratic Republic, enclosing West Berlin (1961–1989)

hydrogen aerial bomb tested in 1961 by the Soviet Union; most powerful nuclear weapon ever created

failed landing operation of Cuba in 1961

1961 Cold War incident in divided Berlin

British spy, a double agent in the service of the Soviet Union

KGB officer (1922-1970)

US B-52 accident involving nuclear weapons

American spy (1910-1995)

series of 1960s US nuclear tests

Austrian-Israeli spy (1912-1966)

Soviet double agent (1918–2008)

summit meeting in Vienna, Austria

Soviet spy ring that operated in England

1934 Bartolomeu Dias-class aviso

1961 defensive British military operation to protect Kuwaiti independence

1961–1962 series of Soviet weaponry tests

British naval petty officer who spied for Poland (1905–1985)