Iran role cited in Middle East instability

Iran’s regional strategy is often described through the “Axis of Resistance,” a loose network of armed groups and political movements tied to Tehran across Lebanon, Iraq, Yemen and the Palestinian territories. Britannica says the network is supported by Iran and its Islamic Revolutionary Guard Corps, while the Wilson Center says Tehran has provided arms, training and financial support to militias and movements in at least six countries. September 7 discussion on X revived that framework by pointing to Yemen, Israel and wider proxy activity as evidence that Iran remains central to several overlapping Middle East conflicts. The core claim is not new: analysts and policy researchers have long said Tehran uses allied non-state actors to project power while reducing the risk of direct confrontation. Belfer Center researcher Lina Khatib wrote in April that this model allowed Iran to extend influence across Lebanon, Syria, Iraq, Yemen and Gaza while limiting the risk of direct Iranian confrontation. (britannica.com) ### Which groups are usually included when people talk about Iran’s regional network? Britannica lists Hezbollah in Lebanon, Hamas and Palestinian Islamic Jihad in the Palestinian territories, Houthi forces in Yemen and certain militias in Iraq as core parts of the network commonly called the Axis of Resistance. It says the network is loose and informal, with members acting independently while coordinating in training, weaponry and support for shared goals. (belfercenter.org) The Wilson Center says Iran’s Revolutionary Guards and Qods Force have backed proxies and partners as a way to challenge local governments, neighboring states and U.S. influence. That support has included Hezbollah, Hamas, Palestinian Islamic Jihad and the Houthis, according to the center’s overview of Iran’s Islamist proxies. ### Why does Yemen keep coming up in this discussion? (britannica.com) Yemen matters because the Houthis have become one of the Middle East’s most potent nonstate actors and because their position affects the Red Sea and Bab al-Mandeb shipping route. The Council on Foreign Relations said in an April 10 update that Iranian support has boosted the Houthis’ military prowess, helping them project force into the Red Sea. (wilsoncenter.org) CFR says the Houthis currently rule about a third of Yemen’s territory and two-thirds of its population. It also says the group’s campaign of strikes in the Red Sea persisted despite U.S. retaliatory attacks and that the Houthis entered the U.S.-Israeli war on Iran in 2026, opening another front in the conflict. Al Jazeera reported on September 7 that Yemeni government forces and the Houthis were battling for control of the Bab al-Mandeb Strait, underscoring why Yemen is cited in broader arguments about regional instability. (cfr.org) That chokepoint sits at the entrance to the Red Sea and is one of the world’s most important shipping routes. ### How direct is Iran’s control over these groups? (cfr.org) The relationship is not uniform. Britannica says each group in the network acts independently and is motivated by its own self-interest, even as the network coordinates on training, weapons and mutual support. That distinction matters in Yemen. Al Jazeera reported in April that the Houthis coordinate with Iran but retain independence. (aljazeera.com) Belfer’s April paper made a similar point more broadly, arguing that Iran’s proxy system has become harder for Tehran to instrumentalize coherently as military pressure, financial strain and leadership losses have weakened cohesion. ### Has that network weakened, or is it still effective? (britannica.com) April and September assessments point in both directions. Khatib’s Belfer paper said Iran’s proxy model had entered a phase of “structural degradation,” citing weakening cohesion in Lebanon, Yemen and Iraq. But Britannica says renewed coordination during the 2026 Iran war showed an ability to adapt, even after several principal actors were exhausted by earlier wars. (aljazeera.com) ISW’s September 3 update also pointed to continuing operational activity, including an Iranian missile and drone attack on U.S. bases in Kuwait and the United Arab Emirates and Israeli operations against Hezbollah infrastructure in Lebanon. (belfercenter.org) ### What should readers watch next? September 2026 reporting is likely to keep focusing on three places: southern Lebanon, where Israel says it is still targeting Hezbollah infrastructure; Yemen, where fighting near Bab al-Mandeb could affect a major shipping lane; and any further direct or indirect Iran-linked attacks on U.S. or Israeli targets. ISW says it publishes Iran updates Monday through Friday, and CFR continues to maintain public explainers on the Houthis and Iran’s regional armed network. (britannica.com) (understandingwar.org)