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Digital Archive International History Declassified

Welcome

The Digital Archive contains once-secret documents from governments all across the globe, uncovering new sources and providing fresh insights into the history of international relations and diplomacy. The Digital Archive is overseen by the Wilson Center's History and Public Policy Program and focuses on the interrelated histories of the Cold War, Korea, and Nuclear Proliferation. [Read more]

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Recently Added
Documents

March 28, 1964

Airgram from the Embassy of the US in Rio De Janeiro to the Department of State, 'Non-Peaceful Uses of Atomic Energy by Brazil'

The US Embassy in Rio De Janeiro sends airgram to the Department of State regarding military pressure in Brazil to produce fissionable material for nonpeaceful purposes.

March 23, 1968

Airgram from the Embassy of the US in Rio De Janeiro to the Department of State, 'Assessment of Brazilian Nuclear Device Capability'

The US Embassy in Rio De Janeiro sends airgram to the Department of State with a technical and political assessment of Brazil's nuclear capacity.

May 16, 1968

Telegram from the Consul of the US in Sao Paulo to the Department of State, 'Brazilian Centrifuge Program'

Information about the classified Brazilian centrifuge program.

November 20, 1970

Letter from Director of the Bureau of International Scientific and Technological Affairs Herman Pollack to Miller N. Hudson, Jr. at the US Embassy in Rio De Janeiro

Miller thanks Pollank for his letter (attached) with historical background on Brazil's interest in developing nuclear weapons.

May 29, 1940

The Chargé in the Soviet Union (Thurston) to the Secretary of State

The Soviet Union threatens intervention in Lithuania due to the alleged "disappearance of men from Soviet military garrison established in Lithuania."

February 06, 1948

Memorandum of Conversation, by the Assistant Secretary of State for Political Affairs (Armour)

Three representatives of displaced persons of the Baltic States bring a petition for President Truman.

March 28, 1964

Airgram from the Embassy of the US in Rio De Janeiro to the Department of State, 'Non-Peaceful Uses of Atomic Energy by Brazil'

The US Embassy in Rio De Janeiro sends airgram to the Department of State regarding military pressure in Brazil to produce fissionable material for nonpeaceful purposes.

March 23, 1968

Airgram from the Embassy of the US in Rio De Janeiro to the Department of State, 'Assessment of Brazilian Nuclear Device Capability'

The US Embassy in Rio De Janeiro sends airgram to the Department of State with a technical and political assessment of Brazil's nuclear capacity.

May 16, 1968

Telegram from the Consul of the US in Sao Paulo to the Department of State, 'Brazilian Centrifuge Program'

Information about the classified Brazilian centrifuge program.

November 20, 1970

Letter from Director of the Bureau of International Scientific and Technological Affairs Herman Pollack to Miller N. Hudson, Jr. at the US Embassy in Rio De Janeiro

Miller thanks Pollank for his letter (attached) with historical background on Brazil's interest in developing nuclear weapons.

May 29, 1940

The Chargé in the Soviet Union (Thurston) to the Secretary of State

The Soviet Union threatens intervention in Lithuania due to the alleged "disappearance of men from Soviet military garrison established in Lithuania."

February 06, 1948

Memorandum of Conversation, by the Assistant Secretary of State for Political Affairs (Armour)

Three representatives of displaced persons of the Baltic States bring a petition for President Truman.

Featured
Collections

TAIWAN’S COLD WAR IN SOUTHEAST ASIA

Documents on Taiwan's efforts to engage non-communist states in Southeast Asia in the 1970s and 1980s.

SOVIET UNION AND THE OLYMPICS

The Soviet Union joined the International Olympic Committee only in 1951, but went on to dominate the games along with its rival, the United States.

CUBAN FOREIGN RELATIONS

Documents on Cuban's international relations, focusing on it's relationship with the Soviet Union, China and the United States.

FOUNDATIONS OF CHINESE FOREIGN POLICY

The texts which have defined the foreign policy of the People's Republic of China.

ORIGINS OF BRAZIL-ARGENTINA NUCLEAR COOPERATION

The origins of nuclear cooperation between Argentina and Brazil from the 1960s onwards.

END OF THE COLD WAR

Documents on the collapse of the Soviet Union in the late 1980s.

TAIWAN’S COLD WAR IN SOUTHEAST ASIA

Documents on Taiwan's efforts to engage non-communist states in Southeast Asia in the 1970s and 1980s.

SOVIET UNION AND THE OLYMPICS

The Soviet Union joined the International Olympic Committee only in 1951, but went on to dominate the games along with its rival, the United States.

CUBAN FOREIGN RELATIONS

Documents on Cuban's international relations, focusing on it's relationship with the Soviet Union, China and the United States.

FOUNDATIONS OF CHINESE FOREIGN POLICY

The texts which have defined the foreign policy of the People's Republic of China.

ORIGINS OF BRAZIL-ARGENTINA NUCLEAR COOPERATION

The origins of nuclear cooperation between Argentina and Brazil from the 1960s onwards.

END OF THE COLD WAR

Documents on the collapse of the Soviet Union in the late 1980s.

Welcome

The Digital Archive contains once-secret documents from governments all across the globe, uncovering new sources and providing fresh insights into the history of international relations and diplomacy. The Digital Archive is overseen by the Wilson Center's History and Public Policy Program and focuses on the interrelated histories of the Cold War, Korea, and Nuclear Proliferation. [Read more]

Explore
themes

Learn about specific topics and regions through essays, timelines and educational resources.

Browse
documents

Explore documents from the Digital Archive through the map, date, and subject browsing tools.

FROM THE
WILSON CENTER

Researching the People’s Republic of China

Based on experiences at 25 different Chinese archives, Charles Kraus offers an in-depth overview of researching the history of the People's Republic of China.

Taiwan’s Cold War in Southeast Asia

Hsiao-ting Lin reveals that Nationalist China’s top leaders believed ingraining anticommunism into the souls of their Southeast Asian neighbors was vital to Taiwan’s international security.

Introducing 'Sources and Methods'

Sources and Methods is a new platform that showcases fresh archival evidence and presents new insights into contemporary international history

TWITTER

RT @martikain: A great read on the discrepancies of transcripts, meeting memos and the like: https://t.co/hI2n2XSUdN via @Pynnoniemi

Memoirs versus memcons. @DrRadchenko tells us how statesmen distort records of meetings with foreign leaders… https://t.co/XB35QqcCD2

The Nehru papers, a trove of invaluable evidence on decolonization and the global Cold War, are now accessible https://t.co/0qEas10ifD

RT @alexbollfrass: My research notes on British and German intelligence assessments of Israel's nuclear program: https://t.co/QsdvNXNdKs

RT @NPIHP: Desert Mystery: Intelligence Assessments of Israel’s Nuclear Program https://t.co/yC4HDqZTPr https://t.co/3Lc4PYriga