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Treaty of Mutual Cooperation and Security between the United States and Japan

1960 military alliance treaty

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Record originEnglish Wikipedia

Text licenseCC BY-SA 4.0

Source revisionSep 23, 2026

Entity authoritySource title only

Source-derived summary

The Treaty of Mutual Cooperation and Security between the United States and Japan, more commonly known as the U.S.–Japan Security Treaty in English and as the Anpo jōyaku or just Anpo in Japanese, is a treaty that permits the presence of U.S. military bases on Japanese soil, and commits the two nations to defend each other if one or the other is attacked "in the territories under the administration of Japan". Over time, it has established a military alliance between the United States and Japan.

Editorial summary

Begin with the source’s own compact description: “Treaty of Mutual Cooperation and Security between the United States and Japan” is 1960 military alliance treaty. The dossier treats that line as a proposition to test through Treaty, Mutual and Cooperation, not as a finished interpretation.

Editorial reviewMost valuable as an event-and-institution map that identifies actors, dates and record creators for deeper historical inquiry. The current 85-word lead offers orientation but no explicit four-digit date, so chronology should not be assumed. The selected authority fields contribute no independent date. For this dossier, Treaty, Mutual and Cooperation is the immediate research focus.

Editorial analysis

Why this record matters

The phrase “1960 military alliance treaty” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Chronology, provenance and viewpoint should be read together before a broad social or political interpretation is accepted. The source revision retrieved here is dated Sep 23, 2026.

Critical limits

Institutional narratives can privilege the records that survived while minimizing voices that were never formally collected. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.

Best used for

Event chronology
Institutional context
Locating named record creators

Verify next

Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.

Three-step research path

Establish the record: confirm the title “Treaty of Mutual Cooperation and Security between the United States and Japan”, its source revision and the description used here.
Expand the search: follow Treaty of Mutual Cooperation and Security between the United States and Japan primary sources, Treaty of Mutual Cooperation and Security between the United States and Japan archive and Treaty research across catalogues and specialist indexes.
Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

Which source most directly establishes the central claim about “Treaty of Mutual Cooperation and Security between the United States and Japan”?
Who created the surviving record, and for what administrative purpose?
Which voices are present, absent or mediated by the institution?

Subject index

Search terms from this dossier

Treaty of Mutual Cooperation and Security between the United States and Japan history →Treaty of Mutual Cooperation and Security between the United States and Japan primary sources →Treaty of Mutual Cooperation and Security between the United States and Japan archive →Treaty research →Mutual research →Cooperation research →Security research →

Source & attribution

This entry incorporates text from “Treaty of Mutual Cooperation and Security between the United States and Japan” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.