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Conflict coverage · Iran–Gulf · Relationship

Iran and the Gulf — United Arab Emirates

A described arrangement, not a rating. Vigil publishes no measure of how strong, warm or hostile a relationship is, and no relationship on this site carries a score, a trend or a direction of travel. What is recorded is what the arrangement covers, when it began, what has changed it, and how firmly each of those is established.
Relationship record

Iran and the Gulf — United Arab Emirates

A dispute over Abu Musa and the Greater and Lesser Tunbs, standing since 1971.

Territorial disputeActiveSince 1971
In short

Iran and the United Arab Emirates have disputed sovereignty over Abu Musa and the Greater and Lesser Tunbs since 1971. The dispute predates the federation itself, has survived every phase of the bilateral relationship, and is unaffected by the 2026 war.

The parties

A symmetric arrangement: it reads the same from either side. Authored once, on one record.

Status

Active

In force and operating. Says nothing about how well it is working, or about which way it is heading.

What the arrangement covers

DiplomaticLegal and treaty

Categories the arrangement is documented to include. Not a measure: a relationship covering more of them is described in more detail, not held more firmly.

Summary

Iran took control of Abu Musa and the Greater and Lesser Tunbs in 1971, in the period of the British withdrawal from the Gulf and the formation of the United Arab Emirates. The UAE claims the islands; Iran administers them and rejects the claim. The dispute is one of the oldest continuously live structures in this module: it has persisted through the 1979 revolution, the Iran–Iraq war, the 2016 downgrade of relations, the 2022 normalisation of much of the Gulf's Iran policy and the 2026 war. What each party claims belongs on its own record, and this module states the existence and the parties of the dispute rather than adjudicating it. It is symmetric because both parties are party to it.

Why it matters

It is the clearest demonstration in the module that the Iran–Gulf system is not reducible to the current war. A dispute that has outlasted five decades of every other kind of change is a structural feature of the region, and a module that recorded only 2026 would not contain it.

Related events

What remains unknown

  • The legal arguments of each party, and the status of any proposal to refer the dispute to arbitration or adjudication, are not authored here. Vigil records that the dispute exists and who is party to it.
  • Whether the islands have featured in the 2026 war in any way has not been established from any source read, and no connection is asserted.

All Iran–Gulf relationships Open in Explore

Assessed as of2026-09Last reviewed2026-09-04