From Eight Countries Have Now Joined the U.S.-Led War Effort Against Iran:

Iranian ballistic missile strikes have been responded to with intense missile defence operations by Saudi Arabia, Qatar and the United Arab Emirates, which have employed their own air defence systems to protect U.S. bases and other targets from Iranian strikes, making them direct participants in the war effort. The possibility of Gulf states deploying their air forces, which include some of the region’s most sophisticated fighter types, to launch retaliatory strikes on Iran, has been speculated by analysts. Alongside the United States, Israel, and the five aforementioned Gulf states, the United Kingdom has also announced its participation in the war effort, with Defence Secretary John Healey referring to the Iranian government as “abhorrent,” in line with the broader consensus in the Western world regarding the need for attacks to ensure its destruction. Royal Air Force Eurofighters which were pre-positioned in Qatar in January are reported to have been scrambled to support air defence efforts.audi Arabia, Qatar and the United Arab Emirates.

From Qatar downs two Iranian fighter jets as conflict widens | Israel-Iran conflict News | Al Jazeera:

The Qatari Defence Ministry said in a statement on Monday that the air force downed two SU-24 aircraft while seven ballistic missiles and five drones fired by Iran were also intercepted.

From British Royal Air Force F-35 stealth fighter jets just scored their first-ever combat kill:

British F-35s shot down drones over Jordan, marking the first time that one of the Royal Air Force’s stealth fighter jets has destroyed a target in combat, the UK defense ministry said on Tuesday.

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British bases have also been hit in this conflict, in which the UK is not offensively involved.

Via Copilot:

Iran has retaliated not only against the U.S. and Israel but also against multiple Gulf nations, drawing them into active defensive combat roles. According to CNBC, Iran has launched strikes against several Gulf states as part of its response.

Countries now engaged in defensive or counter‑strike operations include:

• Saudi Arabia — responding to Iranian missile and drone attacks.
• United Arab Emirates — participating in defensive actions and regional coordination.
• Bahrain, Kuwait, Oman, Qatar — involved in defensive measures, airspace control, and regional security operations.

While some of these states frame their involvement as defensive only, the practical effect is active participation in the conflict.

Several European nations have mobilized forces in response to the widening conflict, particularly to protect Cyprus and maintain regional stability.

• France — engaged in defensive operations and regional force mobilization.
• Greece — participating in protective deployments around Cyprus.
• United Kingdom — operating from its sovereign bases at Akrotiri and Dhekelia, which have become strategically important staging points.

These countries are not leading offensive strikes on Iran but are actively involved in combat‑adjacent operations and regional defense.

Although politically complex, both Iraq and the Kurdistan Region appear on the list of belligerents aligned against Iran in the current conflict. Their involvement includes defensive actions, airspace control, and responses to Iranian‑aligned militias operating within their borders.

Jordan is participating in defensive operations, including intercepting Iranian projectiles and coordinating with U.S. and Gulf partners to maintain airspace security.

Via Grok:

Iran’s retaliation—via ballistic missiles, drones, and other projectiles—has targeted U.S. bases, Israeli territory, and sites in neighboring states. This has pulled several countries into active combat, primarily through defensive actions like intercepting incoming threats, but some have escalated to direct engagements:

• Saudi Arabia, United Arab Emirates (UAE), Qatar, Bahrain, and Kuwait — These Gulf states host U.S. military bases and have actively used their air defense systems (including Patriot and THAAD) to intercept Iranian missiles and drones aimed at those installations and their own territory. Strikes have hit civilian and energy infrastructure in some cases (e.g., airports, ports, and high-rises), prompting strong condemnations and defensive operations. Reports indicate these nations are now direct participants in the war effort, with speculation about potential offensive contributions from their advanced air forces.
• United Kingdom — Announced participation, with RAF Eurofighters (pre-positioned in Qatar) scrambled for air defense support against Iranian threats.
• Jordan — Intercepted Iranian projectiles targeting its airspace or U.S. interests.
• Qatar — Notably shot down Iranian Su-24 bombers, marking direct air-to-air combat.

Other nations like France, Greece, and Oman appear in defensive roles or have been affected, but their involvement is more limited or supportive.

The involvement of so many Middle Eastern countries being against Iran (note that I’m not saying they are pro American or Israel) makes me believe we will soon see more support from European politicians. Many people are easily driven by which way the wind is blowing. With the primary direction of the wind against Iran, more people will join in to be on “the winning side.”