Since 16 March 2026, the Iran War has moved from initial escalation to structural consequences across alliances, regional security and global markets. Military developments continue to illustrate the limits of hard power in achieving state goals. US and Israeli strikes killed senior Iranian figures including Ali Larijani (security chief), Gholamreza Soleimani (head of the Basij paramilitary) and Esmail Khatib (intelligence minister). Despite this, Iran has maintained missile and drone attacks since mid-March, doubling down in an existential fight rather than fracturing as Israeli and American policymakers assumed they would.
The dispute over the Strait of Hormuz has exposed a rupture within the Western alliance. President Donald Trump requested that NATO members support a US-led naval escort mission following Iranian attacks on shipping. The United Kingdom, France and Germany refused to commit forces as it would not be a purely defensive operation (since the US had started the military conflict) and the US had not formally invoked the Article 5 principle of collective self-defence. While NATO has previously operated maritime security operations, such as “Ocean Shield” to counter Somali piracy off the Horn of Africa, this was done based on a UN resolution against non-state actors, whereas intervening in this conflict would be direct involvement in an interstate war.
A 19 March joint statement by Britain, France, Germany, Italy, the Netherlands, Canada and Japan (not a NATO-member) condemned Iranian actions but avoided hard commitments. Trump responded by criticising allies for free-riding and warning that US protection for NATO allies could not be assumed indefinitely. This demonstrates a realist dynamic and the notion that all alliances and state partnerships are conditional and based on converging interests rather than fixed, permanent obligations. The realist idea of alliances being conditional and temporary has also been demonstrated by the USA withdrawing elements of its THAAD missile defence system from South Korea. South Korea accepted THAAD in 2016 at significant economic cost, including Chinese retaliation in the form of trade restrictions, boycotts and diplomatic pressure. The withdrawal of the missile defence system shows that South Korea cannot rely on the US as a guarantor of its defence, and more broadly illustrates the self-serving and selfish nature of states in a realist interpretation of global politics. Because of this, the only true guarantor of state security is a state’s own capabilities.
The Iran War has expanded geographically through Israeli operations in southern Lebanon. Israeli forces have conducted sustained airstrikes and ground incursions targeting Hezbollah. Evacuation orders and continued strikes have displaced around one million Lebanese civilians, roughly one fifth of the population. Lebanese areas south of the Litani River have been largely emptied. Israeli Defence Minister Israel Katz has stated that residents will not be allowed to return until security conditions are met, although it is unclear what these are. Combined with destruction of housing and infrastructure, this raises the risk of long-term demographic change. Israel has not formally annexed southern Lebanon, but the combination of military presence, enforced depopulation and restricted return amounts to de facto territorial control. Proposals for a deeper buffer zone extending towards the Litani River reinforce this trajectory. Under international law, forced displacement and denial of return may constitute violations of humanitarian law if not justified by immediate military necessity. Lebanon’s limited control over Hezbollah and its southern territory reflects partial state failure, enabling external military action.
The most economically significant escalation has been attacks on gas infrastructure. Israeli strikes on Iran’s South Pars field were followed by Iranian strikes on Qatar’s Ras Laffan complex. Damage to two LNG trains and a gas-to-liquids facility has removed around 17 percent of Qatar’s export capacity for an estimated three to five years. QatarEnergy declared force majeure, allowing suspension of delivery obligations due to war. This has disrupted contracts with buyers in Europe and Asia, increased gas prices and raised shipping insurance costs. It demonstrates how economic globalisation transmits regional conflict into global instability.
Some analysts might use the concepts of “rogue state” and “failed state” to understand the Iran War. However, the concept of a “rogue state” remains contested. Iran is frequently labelled as such due to attacks on shipping and infrastructure. Nevertheless, its actions can also be interpreted (and have been publicly justified by Tehran) as logical and reasonable retaliation following attacks on its territory and leadership. US and Israeli strikes on sovereign territory, without a UN mandate to violate the principle of state sovereignty, further complicate any clear distinction. The term reflects political framing rather than objective classification. While Iran is not a “failed state”, there is a risk that a prolonged attritional campaign will degrade the government to the point that it cannot meaningfully control its territory (as is arguably Israel’s goal). This would then risk the classical problems of state failure emerging – refugee crises, internal instability necessitating external intervention, and the territory becoming a breeding-ground for radical and violent non-state actors.