Iran and the United States had a very unstable bilateral conflict as of 2026. There were no official channels for diplomatic communication between the two nations. Military equipment from both countries was located close enough to strike at the allies of the opposing nation. Three different causes for conflict could lead to war in the region within weeks of becoming active. These included Iran’s nuclear project, the activities of militias, and the energy network in the Strait of Hormuz.
Iran’s uranium enrichment is the most immediate trigger for US or Israeli military action
According to subsequent IAEA quarterly reports, Iran has produced enriched uranium to the level of 60%, which is three times higher than the agreed limit under the 2015 JCPOA agreement, from which the US pulled out in 2018. Uranium enrichment for weapons starts at 90%. The time difference between Iran’s current enrichment capability and weapons-grade uranium is counted in weeks, not months, of further enrichment through centrifuges. In the event of military action, US military strategists have indicated that Iran’s Fordow and Natanz uranium enrichment sites will be the first targets. According to Israeli intelligence services, an Iranian bomb constitutes an existential threat to Israeli national security, and the country has executed clandestine missions against Iranian nuclear experts and infrastructure since 2010.
Iran’s regional proxy network already constitutes an active, undeclared war against US interests
Iran is financing, training, and arming a known network of non-state military forces operating in seven nations: Hezbollah in Lebanon, Hamas and Palestinian Islamic Jihad in Gaza, the Houthis in Yemen, Kata’ib Hezbollah and its affiliates in Iraq, and pro-Assad militias in Syria. During the period from October 2023 to early 2024, there were more than 170 documented instances of attacks by Iran-supported forces on US military assets in Iraq and Syria, according to Pentagon documents. The United States retaliated by conducting airstrikes against IRGC facilities in both Syria and Iraq. This incident qualifies as armed conflict according to international laws since the only missing element is the declaration. Iran’s support for the Houthi attacks on commercial vessels in the Red Sea, disrupting global shipping routes worth at least $1 trillion annually, was corroborated by US Naval Intelligence reports.
Iran controls the geographic chokepoint that determines global oil prices
Strait of Hormuz measures 33 kilometers wide at its widest point. About 17 to 21 million barrels of crude oil travel through it daily, constituting the total export volume from Saudi Arabia, UAE, Kuwait, Iraq, and Iran. Iranian naval doctrine clearly states that the blocking of the Strait can serve as a weapon against military attack on Iranian soil. In 2019, the Center for Strategic and International Studies conducted a wargame, and the results showed that even a limited 30-day closure of the Strait would result in oil prices surpassing $250 per barrel, causing global recession among importing countries in Europe, South Asia, and East Asia. As one of Iran’s major trading partners, China gets about 40% of its oil imports through the Strait.
Direct Iran–US war is assessed as probable regional conflict, not automatically global war
The vast majority of geopolitics risk analyses conducted by such organizations as the Eurasia Group, the RAND Corporation, and the International Crisis Group differentiate between the scenario of an Iran-US armed clash and one of a world war scenario. In case the two countries come to an actual military confrontation, they will definitely involve both Israel and Hezbollah along with some of the Middle East states that support the US and, hence, resulting in a multiple-fronted regionally limited armed conflict with many civilian deaths and economic impacts on the global economy. This does not mean that the situation will develop into China or Russia going out against the US militarily as there are no treaties with Iran obligating China and Russia to go out against the US in case of a military conflict.
The Iran-US tension will not need a declaration of war to have effects equivalent to a war. Proxy strikes, the timetable for enriching uranium, closing down the Strait of Hormuz, and the unilateral move by Israel are all separate ways of leading to a major military confrontation, which may stay regional or go beyond, based on how China and Russia decide.
