US-Israeli Military Operations in Iran: Objectives, Timeline, and International Reactions

Since late February, the United States and Israel have engaged in a joint military operation targeting Iran, which has included airstrikes, naval actions, and cyber operations. The conflict, referred to by some officials as "Operation Epic Fury," has involved varied and sometimes contradictory statements from US President Donald Trump and other administration officials regarding its duration, objectives, and justification.

The conflict, referred to by some officials as "Operation Epic Fury," has involved varied and sometimes contradictory statements from US President Donald Trump and other administration officials regarding its duration, objectives, and justification.

The operation has resulted in casualties on both sides, significant economic impacts, and regional escalation, alongside ongoing international diplomatic efforts and domestic political debate.

Overview of the Conflict

The joint US-Israeli military operation against Iran began on February 28. President Trump, along with Israeli President Isaac Herzog, cited concerns over Iran's nuclear program, ballistic missile capabilities, and support for regional proxy groups as primary motivations for the strikes.

Officials within the Trump administration, including Defense Secretary Pete Hegseth, have described the campaign as "the most lethal and precise air power campaign in history," emphasizing surgical strikes and rejecting "nation-building quagmires."

The conflict has resulted in casualties on both sides, significant economic impacts, and regional escalation, alongside ongoing international diplomatic efforts and domestic political debate.

Timeline of Events and Shifting Statements

The conflict's progression and official statements have evolved across several weeks:

• February 28: US and Israeli strikes commenced. President Trump's initial address cited the objective to "defend the American people by eliminating imminent threats from the Iranian regime," encouraging Iranians to "rise up and overthrow the regime."
• March 1: Trump initially stated the war would be a "four-week process." The US announced the death of Iran's Supreme Leader, Ali Khamenei. Six US Army reservists died in an Iranian drone attack in Kuwait.
• March 2: Trump revised the war duration projection to "four to five weeks" and stated military objectives included destroying Iran's missile capabilities, annihilating their navy, preventing nuclear weapons, and stopping the funding of "terrorist armies." Defense Secretary Hegseth stated, "This is not a so-called regime change war."
• March 3: Secretary of State Marco Rubio stated the US launched a pre-emptive strike due to knowledge of an impending Israeli action and potential Iranian retaliation against US forces. Trump contradicted this, claiming, "I might have forced Israel's hand."
• March 8: Defense Secretary Hegseth stated, "this is only just the beginning."
• March 9: Trump claimed the military operation was "way ahead of schedule," referring to it as a "short-term excursion" to "get rid of some evil." When asked if the war would end that week, Trump responded, "No, but soon. Very soon."
• Mid-March: The conflict entered its third and fourth weeks, with continued military actions and growing concerns about its extended nature.
• March 23: Trump stated that he expected the conflict to conclude "very soon" and referred to it as "the beginning of building a new country." He also claimed direct negotiations with Iran were underway, which Iranian officials publicly denied.
• March 24: Trump announced a five-day delay in plans to bomb Iran's power plants, citing "very good" discussions with unnamed Iranian officials.

Justifications and Objectives for US Actions

Administration officials presented various justifications and objectives for the military campaign:

• Eliminating Imminent Threats: President Trump initially cited "imminent threats" from Iran, including historical attacks, ballistic missiles, and funding of "terrorist militias."
• Preventing Nuclear Weapons: A consistent objective has been to prevent Iran from acquiring a nuclear weapon. Trump claimed prior US strikes in the previous year ("Operation Midnight Hammer") had "obliterated" Iran's nuclear program, though international monitors estimated Iran still possessed significant amounts of enriched uranium. Israeli President Herzog cited intelligence of Iran's intent to accelerate nuclear weapon development.
• Destroying Military Capabilities: Stated military objectives included destroying Iran's ballistic missile stockpiles and production capabilities, neutralizing Iran's navy and security infrastructure, and eliminating its potential to produce nuclear weapons.
• Countering Regional Proxies: Preventing Iran from arming, funding, and directing proxy militant groups like Hamas, Hezbollah, and the Houthis was also a frequently cited goal.
• Regime Change: Trump initially encouraged Iranians to "rise up and overthrow the regime" and stated he would "have to be involved in the appointment" of Iran's new leader. However, Defense Secretary Hegseth clarified that it was "not a so-called regime change war," though he noted "the regime sure did change" with Mojtaba Khamenei succeeding his father.
• Securing the Strait of Hormuz: As the conflict progressed and shipping disruptions occurred, securing the Strait of Hormuz became a stated objective. Trump threatened severe consequences if Iran impeded global oil supplies through the strait.

Military Operations and Tactics

US and Israeli forces have conducted extensive air and naval operations:

• Air Campaigns: The US military reported striking over 1,250 to 9,000 targets in Iran, depending on the reporting source and date, including IRGC headquarters, intelligence sites, ballistic missile sites, missile defense systems, and military manufacturing facilities. Operations involved over 9,000 combat flights with aircraft such as B-2 stealth bombers and two carrier strike groups.
• Naval Engagements: The US military reported destroying between 11 and 58 Iranian ships and 16 "mine-laying" boats near the Strait of Hormuz. US forces focused on diminishing Iran's navy and its anti-commercial vessel operations.
• Cyber and Space Operations: Gen Dan Caine, Chairman of the Joint Chiefs of Staff, reported that initial phases involved US cyber and space command "blinding Iranian networks."
• Strikes on Kharg Island: US forces conducted "large-scale" strikes on Kharg Island, Iran's primary oil terminal, targeting naval mine storage facilities and missile bunkers. President Trump stated that oil infrastructure was intentionally spared but could be targeted if Iran interfered with shipping.
• Air Superiority: Gen Caine reported that the US established local air superiority over Iran by suppressing Iranian air defenses.
• Ground Troops: While no US ground forces were reported in Iran, the Pentagon prepared for potential deployment, including scenarios for seizing Kharg Island and detaining Iranian personnel. President Trump's statements varied, from "not putting troops anywhere" to "do whatever it takes" and not ruling out ground troop deployment if necessary. Thousands of Marines were deployed to the Middle East.

Casualties and Humanitarian Impact

The conflict has resulted in casualties on both sides:

• US Casualties: Reports indicated that 4 to 13 US service members had been killed, with some dying from Iranian drone and ballistic missile attacks in Kuwait and Saudi Arabia. An additional 232 US service members were reported injured. Three US fighter jets were mistakenly shot down by Kuwaiti air defenses, with all six crew members ejecting safely. A US military refueling tanker crash in Iraq also killed six crew members.
• Iranian Civilian Casualties: Iranian human rights groups and state media reported civilian fatalities ranging from 555 to 1,245, including 194 children. A missile strike reportedly hit a girls' elementary school in southern Iran, killing over 160 people, mostly children. US military investigations indicated the US was "likely" responsible for the school strike, potentially due to outdated targeting data. President Trump initially denied US responsibility, suggesting Iran bombed its own school, but later acknowledged an investigation was ongoing.

Economic and Regional Impact

The conflict has generated significant economic and regional consequences:

• Strait of Hormuz: The Strait of Hormuz, a critical global shipping route for oil, has experienced stalled traffic and disruptions. Iran's actions led to a de facto blockade, with reports of mines laid and commercial vessels attacked.
• Oil Prices: Global oil prices surged, with Brent crude reaching over $100-$120 a barrel, and US gas prices increasing significantly.
• Sanctions and Oil Sales: The US temporarily eased sanctions on Russian oil to stabilize markets, and Treasury Secretary Scott Bessent defended easing sanctions on Iranian oil already at sea, citing a plan to address energy costs and assist Asian allies.
• Regional Escalation: The conflict expanded across at least nine countries. Iranian allies like Lebanese Hezbollah launched missiles and drones toward Israel, prompting Israeli airstrikes in Lebanon. Iran launched ballistic missiles and drones at Gulf states including Qatar, Bahrain, Saudi Arabia, and the UAE.
• Infrastructure Attacks: Iranian Shahed drones struck Kuwait’s largest oil refinery and Qatar's Ras Laffan Industrial City, halting energy production.

Diplomatic and International Reactions

International reactions varied, and diplomatic efforts were reported:

• Allied Stance: Israel was described as a "capable partner." However, US officials criticized other allies, specifically mentioning Britain, for perceived hesitation. The UK later permitted the use of its Diego Garcia base for "defensive" purposes but affirmed it would not participate in "regime change from the skies." Australia and Canada supported US actions aimed at preventing Iranian nuclear weapons.
• International Calls: The European Union called for "maximum restraint." The UN Security Council passed a resolution condemning Iran's attacks and calls to cease threats to shipping.
• Russia's Alleged Role: Multiple sources reported Russia provided intelligence to Iran regarding US positions, which the US stated it was tracking and incorporating into battle plans.
• International Cooperation: Trump sought to form an international coalition to secure the Strait of Hormuz, urging nations dependent on Middle Eastern energy, such as Japan and China, to assist. He criticized NATO allies for perceived lack of support.
• Omani Mediation: Peace talks mediated by Oman were reportedly ongoing shortly before the initial US strikes.

Future Strategy and Conflicting Perspectives

The administration's future strategy has involved discussions about ground troops, funding, and the conflict's end state:

• Ground Force Deployment: The Pentagon developed detailed plans for potential US ground operations, including amphibious landings on Kharg Island and scenarios for capturing Iranian soldiers. Thousands of additional Marines were deployed to the Middle East, with elements of the 82nd Airborne Division also preparing for deployment.
• Funding: Defense Secretary Hegseth confirmed a request for an additional $200 billion from the White House to fund the war, which drew criticism from some members of Congress.
• End Goal: President Trump's statements on the end goal varied, from "very complete" to "only just the beginning," and "building a new country." He stated the conflict would conclude "when I feel it – feel it in my bones" and when Iran no longer has capacity for developing weaponry.
• Negotiations: While Trump claimed direct negotiations were underway and Iran desired a deal, Iranian officials publicly denied these reports.
• Public Opinion: Public polling indicated widespread opposition to the military action in the US, with some conservative commentators also expressing criticism. Analysts suggested domestic political considerations and approaching elections could influence the administration's strategy.
• Strategic Dilemmas: Analysts noted the US faced a complex strategic situation, with Iran demonstrating resistance, domestic support diminishing, and allies distancing themselves. Some suggested the conflict had transitioned from a "war of choice" to a "war of necessity" due to the closure of the Strait of Hormuz.