# Strategic Defense Initiative

> defunct American missile defense system (1984-1993)

**Wikidata**: [Q211031](https://www.wikidata.org/wiki/Q211031)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Strategic_Defense_Initiative)  
**Source**: https://4ort.xyz/entity/strategic-defense-initiative


## References

1. Nuovo soggettario
2. Freebase Data Dumps. 2013
3. BBC Things
4. Quora
5. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)