The Gulf War and the United States basing posture that followed — Key Events — Iran–Gulf

What happened

Iraq's invasion of Kuwait and the coalition campaign that reversed it are followed by a durable United States military presence in the Gulf, hosted under bilateral arrangements with several states.

The basing arrangements this module authors as relationships — Bahrain, Qatar, Kuwait — date from this period. It is why an external power is a core actor in Gulf security rather than a visitor to it.

Confidence: High

When1990 – 1991

KindMilitary · Political

Confidence: High Sources: Established historical record · Congressional Research Service — Iran, the Gulf and the Strait of Hormuz Methodology Corrections

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Watch questions this event bears on

Standing analytical questions whose evidence runs through this event, each with its latest review. Derived from the Watch object, never restated here.

Military2026-10-18Does Gulf air and missile defence become institutionally integrated?
Unchanged
1. 2026-09-04: Baseline
2. 2026-09-13: No material change
3. 2026-09-20: Movement observed
4. 2026-09-27: Movement observed
5. 2026-10-04: No material change
6. 2026-10-11: No material change
7. 2026-10-18: No material change

Connected records

3 records that this event names, or that name it — every one an explicit reference in a published record, nothing inferred from subject matter.

Actors1

Actor records this event names.

The United States in the Gulf

Participants2

Organisations this event records, with the role and confidence it states.

Where this fits

This is one entry in the Iran–Gulf timeline. The full Key Events surface carries every dated turning point with its filters and its essential subset, and this event in place shows what came before and after it. How Vigil grades, dates and sources its claims is set out in the methodology.