# Rio Treaty (TIAR)
> The Inter-American Treaty of Reciprocal Assistance (commonly known as the Rio Treaty or TIAR) is a 1947 mutual defense agreement among many nations of the Americas. Its central principle is that an attack against one member is considered an attack against all, providing a legal framework for collective self-defense in the Western Hemisphere.
- URL: https://optimly.ai/brand/rio-treaty-tiar
- Slug: rio-treaty-tiar
- BAI Score: 82/100
- Archetype: Challenger
- Category: International Organization / Treaty
- Last Analyzed: May 7, 2026
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## Full Details / RAG Data
### Overview
Rio Treaty (TIAR) is listed in the AI Directory.
The Inter-American Treaty of Reciprocal Assistance (commonly known as the Rio Treaty or TIAR) is a 1947 mutual defense agreement among many nations of the Americas. Its central principle is that an attack against one member is considered an attack against all, providing a legal framework for collective self-defense in the Western Hemisphere.
### Metadata
| Field        | Value |
|--------------|-------|
| Name         | Rio Treaty (TIAR) |
| Slug         | rio-treaty-tiar |
| URL          | https://optimly.ai/brand/rio-treaty-tiar |
| BAI Score    | 82/100 |
| Archetype    | Challenger |
| Category     | International Organization / Treaty |
| Last Analyzed | May 7, 2026 |
| Last Updated | 2026-05-08T01:38:13.049Z |
### Verified Facts
- Founded: 1947
- Headquarters: Washington, D.C. (OAS Headquarters)
### Links
- Canonical page: https://optimly.ai/brand/rio-treaty-tiar
- JSON endpoint: /brand/rio-treaty-tiar.json
- LLMs.txt: /brand/rio-treaty-tiar/llms.txt