US-Iran Conflict Escalates: Regional Wars, Economic Strain, and Shifting Global Energy Dynamics Since February

Iran has reported that seven oil tankers have come under attack in and around the Strait of Hormuz, as tensions escalate between Tehran and the United States. The Islamic Revolutionary Guard Corps (IRGC) has warned that renewed U.S. military action could prompt a broader regional response, raising concerns about a potential resurgence in hostilities.

Despite analyst assessments suggesting that a major U.S. offensive is unlikely prior to the November 3 midterm elections, inflammatory rhetoric from both sides has fueled speculation about a possible return to armed conflict. Central to these fears are ongoing disputes over control of strategic maritime routes—particularly the Strait of Hormuz—and Iran’s nuclear ambitions.

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Before the February 28 strikes, the volatile Gulf waterway—through which roughly one-fifth of global oil and liquefied natural gas shipments transited—was not yet a focal point of contention. Diplomatic discussions regarding Iran’s nuclear program were still active at that time.

As the U.S. struggles with dwindling defense supplies and global energy markets brace for instability, the question remains: how has the situation evolved since those initial attacks?

Below is an analysis of the shifting dynamics across military, political, and economic landscapes:

How Has the Battlefield Expanded?

Compared to the pre-war environment in February, any renewed confrontation would unfold across multiple theaters rather than a single centralized front.

Iran’s Regional Allies and Lebanon

The original U.S.-Israeli campaign aimed not only to destabilize Iran’s leadership but also to weaken its regional proxies such as Hamas and Hezbollah. Then-President Trump emphasized the need to prevent Iranian-backed factions from targeting American forces or disrupting regional stability.

Despite failing to unseat Iran’s regime, the campaign severely weakened Hamas amid Israel’s continued operations in Gaza, resulting in over 1,400 Palestinian casualties following last October’s ceasefire.

Lebanon’s entry into the conflict occurred after Hezbollah launched retaliatory strikes against Israeli positions in the north, responding to the death of Iran’s Supreme Leader Ali Khamenei during the opening salvos of the war.

Subsequently, Israel initiated a bombing campaign against alleged Hezbollah strongholds in southern Lebanon and Beirut’s suburbs, temporarily occupying nearly a fifth of Lebanese territory and displacing over a million civilians. Although partial withdrawals have occurred, substantial Israeli presence persists along Lebanon’s southern border.

Waterways and Energy Infrastructure Become New Frontlines

One of the most significant transformations involves the militarization of Gulf shipping lanes and energy infrastructure. Iranian counterattacks on U.S. assets and civilian utilities have drawn Gulf nations into the crossfire, exposing them to severe repercussions.

Urban Coningham, a researcher at the Royal United Services Institute, noted: “Previously, negotiations focused on Iran’s nuclear program and its regional alliances. Now, the Strait of Hormuz and Gulf-based energy installations dominate discussions.”

She highlighted that while Gulf conflicts aren’t unprecedented, recent Iranian precision strikes—including those on oil refineries—mark a strategic shift in scope and intensity.

Once a freely navigable passage, the Strait of Hormuz now serves as a lever for Iranian influence, allowing Tehran to disrupt global supply chains while contending with a U.S.-led naval blockade. Maritime traffic has declined dramatically, leading to sharp reductions in oil exports.

In March, CNN reported that Pentagon planners had underestimated Iran’s resolve to choke off passage through the strait. Defense Secretary Pete Hegseth dismissed the findings, asserting that military preparations accounted for such scenarios.

Renewed Fighting in Yemen

Tensions in Yemen have surged anew, with Saudi-backed Yemeni forces clashing once again with Iran-aligned Houthis. These confrontations have spilled beyond Yemen’s borders, extending into Saudi Arabia itself.

Houthi missile and drone raids now regularly target Saudi transportation hubs and energy facilities, complicating the broader regional crisis.

These developments have underscored another crucial maritime chokepoint — the Bab al-Mandeb Strait — which connects the Red Sea to the Gulf of Aden. Disruptions here threaten to compound logistical challenges posed by Hormuz-related delays, increasing pressure on U.S. interests and global commerce.

How Have Political Stakes Transformed?

Both governments operate under distinct constraints. While Iran continues grappling with internal dissent and questions of regime survival, it faces no imminent electoral accountability akin to what the U.S. confronts ahead of its midterms.

In Iran

Prior to February’s strikes, mass protests swept across Iran following a violent crackdown in January, driven by economic hardship and currency devaluation. Subsequent U.S.-Israeli bombings claimed the lives of key figures including Khamenei and security official Ali Larijani—but failed to topple the Islamic Republic.

Khamenei’s son Mojtaba assumed power posthumously, consolidating control alongside the IRGC. Hardline factions within the government have gained prominence as reformist voices fade.

Coningham cautioned against interpreting the lack of public demonstrations during wartime as endorsement of the regime: “Resistance to foreign invasion may unify populations temporarily—but doesn’t indicate long-term strength.”

In the U.S.

President Trump enters potential renewed hostilities amid declining domestic support. Polling data shows his approval plummeting from 40% before the war to just 31%, marking the lowest rating recorded by Reuters/Ipsos during his presidency.

Fuel price hikes and widespread discontent over prolonged engagement in Iran contribute significantly to voter dissatisfaction.

How Has the Economic Equation Shifted?

In Iran

Even before conflict erupted, sanctions and frozen overseas assets had crippled Iran’s economy. Military action has intensified these pressures through combined strategies involving austerity measures, tighter sanctions, and a naval embargo.

By April, Iranian authorities estimated damages exceeding $270 billion due to direct and indirect impacts of the war. Late August saw further strain when Washington launched “Operation Economic Outcast,” penalizing entities conducting trade with Iran.

Official reports reveal GDP contraction of 10.1% year-on-year between March and June, exacerbated by reduced energy revenues and a collapsing national currency—the rial.

In the U.S.

America bears heavy financial burdens too. The Congressional Budget Office estimated that defense spending reached $38 billion by early September, with monthly operational costs projected between $2-$3 billion depending on escalation levels.

This surge pushed total federal debt past $40 trillion in August—an achievement originally forecast two years later, highlighting fiscal strain exacerbated by wartime expenditures.

How Has the Military Balance Evolved?

For the U.S.

Though successful in penetrating deep into Iranian territory, American firepower hasn’t succeeded in toppling the government nor degrading Tehran’s retaliatory capabilities against U.S. bases and energy infrastructure throughout the region.

Coningham observed: “Converting tactical dominance into strategic victory proves elusive for Washington.” She interpreted recent troop movements as deliberate signaling rather than definitive policy shifts, noting increased redeployment signals departure from earlier plans to scale back regional presence.

Defense analysts warn of acute ammunition shortages plaguing U.S. forces, particularly after expending costly missile systems defending against swarms of low-cost Iranian drones.

Reports suggest the USS Theodore Roosevelt carrier group alongside the 13th Marine Expeditionary Unit will arrive in theater by late November, adding approximately 10,000 troops—a move potentially expanding presidential options moving forward.

For Iran

According to Coningham, Iran frames the conflict within a historically rooted narrative of resistance against perceived Western imperialism and Zionist aggression.

Since February 28, the IRGC has showcased proficiency in asymmetric warfare tactics, effectively countering superior U.S. firepower using inexpensive yet scalable drones and decentralized command structures.

Despite losses including much of its navy, Iran adapts by relying on nimble vessels like fast patrol boats deployed in recent Strait of Hormuz skirmishes.

Terrain advantages remain pivotal; coastal artillery positions allow Iranian forces to engage ships navigating narrow passages while deploying improvised naval mines via rocket-launch mechanisms—an unexpected challenge for traditional naval doctrines.

How Has Trade Been Impacted?

A looming energy crisis was absent from forecasts in February—but reality paints a starkly different picture today.

War-induced disruptions to Gulf supplies and fears of escalation sent shockwaves through commodity markets. Brent crude settled at $72.48/barrel on February 27. By April 30, it had climbed to $126.41—the highest level in four years.

As of early Friday trading, prices hovered near $114.47 per barrel.

Crises extend beyond crude oil. Middle Eastern refinery shutdowns and sanctions on Russian output have destabilized diesel markets globally. Meanwhile, disruptions to liquefied natural gas exports compound supply chain pressures.

The International Energy Agency cautioned in October that bottlenecks could persist well into 2027, threatening prolonged inflationary trends worldwide.

Diesel prices have doubled domestically in the United States, eroding agricultural profitability and raising transportation costs—issues particularly resonant among rural voters supporting Trump.

Alternative export corridors—including new ports, pipelines, and ship-to-ship transfers—have partially restored Gulf flows, albeit at elevated cost and continued vulnerability to attack.

Securing safe passage through vital Middle Eastern waterways has thus emerged as a paramount concern amid ongoing hostilities.

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