MANIFOLD
Will an Iranian ballistic missile strike the US/UK base at Diego Garcia before June 1st 2026?
8
Ṁ100Ṁ387
May 31
17%
chance

https://www.wsj.com/livecoverage/iran-us-israel-war-updates-2026/card/iran-targeted-diego-garcia-base-with-ballistic-missiles-rb7MdZW1CfwRTauDYHOt

Resolution criteria

This market resolves YES if Iran successfully strikes the Diego Garcia base with a ballistic missile before June 1st, 2026. A successful strike means the missile reaches and impacts the base or its immediate vicinity, causing damage. Missiles that fail to hit the base or are intercepted before impact resolve NO. Resolution will be determined by official statements from U.S. or U.K. military authorities, major news outlets citing military sources, or confirmed damage assessments.

Background

The conflict began on February 28 with U.S. and Israeli airstrikes against Iranian targets. On March 21, 2026, Iran launched two ballistic missiles at Diego Garcia, the joint U.S.-U.K. military base in the Indian Ocean. Both missiles failed to hit the airbase—one missile failed in flight and a U.S. warship reportedly fired an SM-3 interceptor at the second.

Diego Garcia, located in the British Indian Ocean Territory, is a key strategic hub for U.S. forces, hosting long-range bombers, nuclear submarines and guided-missile destroyers. Diego Garcia is approximately 4,000 kilometers from Iran.

Considerations

The March 21 attack marked Iran's first operational use of intermediate-range ballistic missiles and a significant attempt to reach far beyond the Middle East and threaten U.S. interests. Iranian Foreign Minister Abbas Araghchi had previously indicated his country's military had limited its ballistic missile range to 2,000 kilometers, making the successful launch to Diego Garcia a demonstration of previously undisclosed capability. The base's remote location and advanced air defenses present significant obstacles to a successful strike, though Iran has now demonstrated the range to attempt one.

This description was generated by AI.

  • Update 2026-03-22 (PST) (AI summary of creator comment): A successful strike (YES resolution) requires all four of the following:

  1. Successful launch

  2. Accurate travel to the target

  3. Delivery of a working payload

  4. Detonation or deployment of said payload

If the first three occur but a US/UK countermeasure or Iranian equipment malfunction results in only inert debris hitting the ground, it will not resolve YES.

Market context
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What if it impacts but does no damage because the Americans activate the Iron Curtain superweapon

@PhilosophyBear I’m not familiar with the “Iron Curtain” superweapon. Regardless, my interest here is in Iranian capabilities, so a successful strike requires:

1) a successful launch

2) accurate travel to the target

3) delivery of a working payload

4) detonation or deployment of said payload

If the first three happen but a US or UK counter (or a malfunction of Iranian equipment, for that matter) results in a couple of inert chunks of metal hitting the ground, then it will not count towards a YES resolution. The guiding idea here is “can the Iranians do this or not?”

@BernardGuerrero sorry, it's a bad red alert joke

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