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Strategic Defense Initiative

defunct American missile defense system (1984-1993)
Thing closed_project Q211031
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Strategic Defense Initiative

Summary

Strategic Defense Initiative is a closed project[1]. It has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[2]

Key Facts

  • Strategic Defense Initiative is in the country of United States[3].
  • Strategic Defense Initiative's instance of is recorded as closed project[4].
  • Strategic Defense Initiative is operated by Ballistic Missile Defense Organization[5].
  • Strategic Defense Initiative's Commons category is recorded as Strategic Defense Initiative[6].
  • January 1, 1984 marks the founding of Strategic Defense Initiative[7].
  • Strategic Defense Initiative was dissolved in January 1, 1993[8].
  • Strategic Defense Initiative's topic's main category is recorded as Category:Strategic Defense Initiative[9].
  • Strategic Defense Initiative's different from is recorded as SDI[10].
  • Strategic Defense Initiative's has goal is recorded as missile defense[11].
  • Strategic Defense Initiative's merged into is recorded as Space Development Agency[12].

Body

Definition and Type

Strategic Defense Initiative's instance of is recorded as closed project[4].

Origins

January 1, 1984 marks the founding of Strategic Defense Initiative[7].

Why It Matters

Strategic Defense Initiative has Wikipedia articles in 28 language editions, a strong signal of global cultural recognition.[2] It is known by 38 alternative names across languages and contexts.[13]

Related Entities

United States

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikidata sitelinks. wikidata.org.
  2. [13] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Strategic Defense Initiative. Retrieved May 3, 2026, from https://4ort.xyz/entity/strategic-defense-initiative
MLA “Strategic Defense Initiative.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/strategic-defense-initiative.
BibTeX @misc{4ortxyz_strategic-defense-initiative_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Strategic Defense Initiative}}, year = {2026}, url = {https://4ort.xyz/entity/strategic-defense-initiative}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Strategic Defense Initiative — https://4ort.xyz/entity/strategic-defense-initiative (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/strategic-defense-initiative · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 4d ago · Bouzinac · 2026-06-27 view diff on Wikidata ↗
    Different from → SDI
    "/* wbcreateclaim-create:1| */ [[Property:P1889]]: [[Q2345847]], using [[User:Frettie/consistency check add.js]]"
  2. 5d ago · Putnik · 2026-06-26 view diff on Wikidata ↗
    Dissolved → —
    Aliases → —
    Operator → —
    Merged into → Space Development Agency
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:2||1 */ [[Property:P7666]]: strategines-gynybos-iniciatyva"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.