Iran has spent decades building multi-tiered military capabilities at home and across the region that were at least partly aimed at deterring the United States from attacking it. By entering Israel’s war, the U.S. may have removed the last rationale for holding them in reserve. That could mean a wave of attacks on U.S. forces in the Middle East, an attempt to close a key bottleneck for global oil supplies or a dash to develop a nuclear weapon with what remains of Iran’s disputed program after American strikes on three key sites. A decision to retaliate against the U.S. and its regional allies would give Iran a far larger target bank and one that is much closer than Israel, allowing it to potentially use its missiles and drones to greater effect. The U.S. and Israel have far superior capabilities, but those haven’t always proven decisive in America’s recent history of military interventions in the region. Ever since Israel launched the war with a surprise bombardment of Iran’s military and nuclear sites on June 13, Iranian officials from the supreme leader on down have warned the U.S. to stay out, saying it would have dire consequences for the entire region. Here’s a look at what Iran’s next move might be. Targeting the Strait of Hormuz The Strait of Hormuz is the narrow mouth of the Persian Gulf, through which some 20% of all oil traded globally passes, and at its narrowest point it is just 33 kilometers (21 miles) wide. Any disruption there could send oil prices soaring worldwide and hit American pocketbooks. Iran boasts a fleet of fast-attack boats and thousands of naval mines that could potentially make the strait impassable, at least for a time. It could also fire missiles from its long Persian Gulf shore, as its allies, Yemen’s Houthi rebels, have done in the Red Sea. The U.S., with its 5th Fleet stationed in nearby Bahrain, has long pledged to uphold freedom of navigation in the strait and would respond with far superior forces. But even a relatively brief firefight could paralyze shipping traffic and spook investors, causing oil prices to spike and generating international pressure for a ceasefire. Attacking US bases and allies in the region The U.S. has tens of thousands of troops stationed in the region, including at permanent bases in Kuwait, Bahrain, Qatar and the United Arab Emirates, Arab Gulf countries just across the Persian Gulf from Iran — and much closer than Israel. Those bases boast the same kinds of sophisticated air defenses as Israel, but would have much less warning time before waves of missiles or swarms of armed drones. And even Israel, which is several hundred kilometers (miles) further away, has been unable to stop all of the incoming fire. Iran could also choose to attack key oil and gas facilities in those countries with the goal of exacting a higher price for U.S. involvement in the war. A drone attack on two major oil sites in Saudi Arabia in 2019 — claimed by the Houthis but widely blamed on Iran — briefly cut the kingdom’s oil production in half. Activating regional allies Iran’s so-called Axis of Resistance — a network of militant groups across the Middle East, is a shadow of what it was before the war ignited by […]