Editing Cold War espionage (section)

== Chronology ==
{{expand list|date=January 2017}}
{| class="wikitable sortable"
|+Chronology
|-
! Date
! Topic
! Event
|-
|1939
|
|{{flagdeco|United States|1912}} [[Whittaker Chambers]] meets with Assistant Secretary of State [[Adolf Berle]]; names 18 current and former government employees as spies or Communist sympathizers including [[Alger Hiss]], [[Donald Hiss]], [[Laurence Duggan]], and [[Lauchlin Currie]].  Berle notified the Federal Bureau of Investigation (FBI) of Chambers's information in March 1940.
|-
| 1941-08-10
| 
|{{flagdeco|Soviet Union|1936}} The Soviet [[GRU (Soviet Union)|GRU]] reestablished contact with [[Klaus Fuchs]], a German emigre scientist, who transferred from the British [[Tube Alloys]] nuclear research program to the US-led [[Manhattan Project]] in 1943.{{sfn|Rhodes|1995|pp=51, 57, 63}}
|-
| 1942
| [[Nuclear espionage]]
|{{flagdeco|Soviet Union|1936}} US communist [[Jacob Golos]] put [[Julius and Ethel Rosenberg]] (and their associated communist cell) in direct contact with Soviet intelligence operatives in New York.{{sfn|Radosh|Milton|1997|pp=22}} The Rosenberg cell provided information on newest developments in electrical and radio engineering to the XY Line of the NKGB foreign intelligence.
|-
| 1944
| [[Nuclear espionage]]
|{{flagdeco|Soviet Union|1936}} [[Yuri Modin]] became the KGB controller of the "[[Cambridge Five]]" ring of [[atomic spies]].
|-
|1945
|
|{{flagdeco|United States|1912}} Starting in November 1945, Elizabeth Bentley, under the code name 'Gregory', started naming almost 150 Union Spies; among those, at least 35 were in fact federal government employees.
|-
| 1946-12-20
| 
|{{flagdeco|United States|1912}} The [[Venona Project|Venona counter-intelligence program]] is first able to decode Soviet intelligence messages thereby discovering the Soviet spying activities within the Manhattan Project.{{sfn|Benson|1996|pp=5}} The project operated for 37 years and obtained around 3,000 messages, some lead to the discovery of the [[Cambridge Five]] and other messages led to the discovery of Soviet spies (including [[The Rosenbergs]]) operating within a US nuclear facility. {{sfn|Benson|1996|pp=7}}
|-
| 1949
| [[Nuclear espionage]]
|{{flagdeco|Soviet Union|1936}} A [[Mossad]] agent assumed, seeing CIA agent [[James Jesus Angleton]] dining with Cambridge Five mole [[Kim Philby]], that the former had turned the latter into a [[triple agent]].<ref>{{cite web |last=Littell|first=Robert|url=http://www.indiebound.org/author-interviews/littellrobert |title=A Cold War Mystery: Was the Soviet Mole Kim Philby a Double Agent...or a Triple Agent? |access-date=8 April 2014 |publisher=Indiebound }}</ref>
|-
|-
|1950
|
|Klaus Fuchs voluntarily confesses to [[MI5]] that he has been spying for the USSR. Fuchs identifies [[Harry Gold]] who identifies [[David Greenglass]] which in turn leads to the arrest and trial of the Rosenbergs.{{sfn|Radosh|Milton|1997|pp=16-19}}
|-
|August 1952 
|Communications interception
|Operation Vagabond-Able launches floating transmitter [[USCGC Courier]] the most powerful radio broadcasting station on a ship. Additional to broadcasting VOA programming to countries behind the Iron Curtain, Courier docked at Rhodes Greece received information from American spies in the Soviet Union and relayed info to the US. Ship was manned by [[US Coast Guard]], [[USIA]], [[CIA]], and funded by [[US State Department]].  Template:Cite online CIA memorandum USIA : Possible Intelligence Training Needs : https://www.cia.gov/readingroom/document/cia-rdp78-06365a000800010020-2
|-
|-
|August 1955
|Communications interception
|Joint US/UK (CIA/SIS) [[Operation Gold]] puts a tunnel under the frontier in [[occupied Berlin]] to tap into Soviet army communications. Already aware of the plan through George Blake, the Soviets let the operation run rather than compromise their agent.<ref name=":02">{{Cite book|title=On the front lines of the Cold War : documents on the intelligence war in Berlin|last=Steury|first=Donald|publisher=CIA History Staff, Center for the Study of Intelligence|year=1999}}</ref>
|-
|April 1956
|Communications interception
|The Soviets discover the tunnel being used to tap their communications and to protect their mole George Blake, they stage a crew to accidentally discover the tunnel. However, in just the short time it was operational, the tap collected about 40,000 hours of Soviet telephone conversations.<ref name=":02"/>
|-
| 1959-06
| [[Corona (satellite)]]
|{{flagdeco|United States|1912}} Under the covername ''Discoverer'' the camera-carrying [[Corona (satellite)|Corona satellite]] missions start.
|-
| 1959-10-15
| [[Active measures]]
|{{flagdeco|Soviet Union}} Ukrainian politician [[Stepan Bandera]] was assassinated on KGB orders.
|-
| 1960
| [[1960 U-2 incident]]
|{{flagdeco|United States}} Pilot [[Francis Gary Powers]]' [[Lockheed U-2]] spy plane was shot down by a Soviet [[surface-to-air missile]]. The US is forced to publicly admit that they were operating surveillance missions over the USSR.
|-
|August 1960
|
|[[Discoverer 14]] is the first Corona mission to successfully take reconnaissance pictures from orbit and return them to earth.<ref>{{cite web|last=Williams|first=David R.|title=Discoverer 14|url=https://nssdc.gsfc.nasa.gov/nmc/spacecraft/display.action?id=1960-010A|publisher=NASA|access-date=8 April 2014}}</ref> 
|-
|1961
|
|The [[Berlin Wall]] is erected, marking the Soviet desire to stop the flow of goods and information into their territory clear. At this time, the importance of East Berlin as an intelligence base for the US located within Soviet territory was solidified. <ref name=":02"/>
|-
|1962
|
| [[Oleg Penkovsky]] provides information to SIS and CIA about Soviet missile capabilities and deployment to Cuba. The Soviets are aware of his activities through their own agent within the NSA.
|-
| 1962-10-26
| [[Cuban Missile Crisis]]
|{{flagdeco|Soviet Union}} Under the pseudonym of [[Alexander Feklisov|Aleksandr Fomin]], the KGB Station Chief in Washington proposed the crisis' diplomatic solution.
|-
| 1964
| [[Operation Neptune (espionage)|Operation Neptune]]
|{{flagdeco|Soviet Union}} A ruse was used to indicate [[West Germany]]'s spies remaining from World War II had been exposed.
|-
|1974
|
| [[Oleg Gordievsky]], a KGB agent becomes a double agent of MI6. In 1982, Gordievsky is given position as KGB's Resident in London in charge of intelligence gathering in UK. 
|-
|1985-03-23
|{{nowrap|[[Military liaison missions]]}}
|{{flagdeco|United States}} On a mission to photograph a Soviet tank storage building, US intelligence officer Major [[Arthur D. Nicholson]] was killed by a Soviet soldier.
|}