B-52s Over Iran: Pentagon Confirms First Overland Bomber Missions, 11,000 Targets Hit in 30 Days
At a Pentagon briefing Tuesday, Gen. Dan Caine confirmed that US B-52 Stratofortress bombers have begun flying overland missions over Iran — the first time in the war. The B-52 is highly vulnerable to air defense systems. Flying it directly over Iran is a deliberate signal: the US military now believes Iran's air defenses have been largely destroyed. The IDF put the figure at more than 80% eliminated. Here is what the Pentagon said and what it means.
The Announcement
At a public Pentagon briefing on Tuesday, March 31, Air Force General Dan Caine, the Chairman of the Joint Chiefs of Staff, made the following statement: "Over the past 30 days, we've struck more than 11,000 targets. Given the increase in air superiority, we've successfully started to conduct the first overland B-52 missions, which allow us to continue to get on top of the enemy." (Source: Business Insider, citing Pentagon briefing, March 31, 2026; The Guardian, March 31, 2026; Times of Israel, March 31, 2026.)
The briefing was also attended by Defense Secretary Pete Hegseth, who stated the next few days would be "decisive" and warned Iran that the conflict would intensify if it did not agree to a deal, per Reuters. (Source: Reuters, March 31, 2026.)
Why the B-52 Matters
The B-52 Stratofortress is one of the oldest continuously operated warplanes in the US arsenal, having first entered service in the 1950s. Today, the US Air Force has 72 active B-52s. Unlike the B-2 Spirit stealth bomber or the faster B-1 Lancer, the B-52 is large, slow, and lacks radar-evading stealth technology — making it extremely vulnerable to surface-to-air missile systems. (Source: Business Insider, March 31, 2026.)
In earlier phases of conflicts involving air defenses, the US would not fly B-52s directly over hostile territory. The aircraft is designed for standoff strikes — launching weapons from a distance outside the range of air defense systems. The Guardian noted explicitly: "B-52 bombers — unlike the agile or radar-evading aircraft in the US arsenal — are considered highly vulnerable to antiaircraft systems. The decision to fly the planes directly over Iran signifies the American military's confidence that it has largely destroyed Iran's capability to take down the lumbering bombers." (Source: The Guardian, March 31, 2026.)
The deployment of B-52s in overland missions, therefore, is not primarily a tactical statement about firepower — it is a strategic signal about the state of Iran's air defenses.
The Air Defense Picture
The Institute for the Study of War (ISW) reported in its March 30 special update that the Israel Defense Forces stated they had destroyed more than 80% of Iran's air defense systems. The IDF also struck an Iranian air defense site in Nowshahr, Mazandaran Province, near the Caspian Sea, on March 30. (Source: Institute for the Study of War, Special Report, March 30, 2026.)
Business Insider noted that in the early days of the war, Caine and other US officials identified Iranian air defenses and missiles as primary targets. American and Israeli forces used both kinetic strikes and, per the Pentagon, cyber, space, and electronic warfare assets to blind Iranian defenses and disrupt communications. The cumulative result is what Caine described Tuesday as "growing air superiority" — sufficient to fly the B-52 without prohibitive risk. (Source: Business Insider, March 31, 2026.)
Previous strikes on Iranian air defenses predate this war. Israeli operations in 2024 and the US-Israeli "Operation Midnight Hammer" in summer 2025 also degraded Iranian air defense networks, per Business Insider. The 30-day campaign since February 28 has compounded that earlier damage. (Source: Business Insider, March 31, 2026.)
11,000 Targets in 30 Days
Caine's statement that the US has struck "more than 11,000 targets" over the first 30 days of the war provides a scale benchmark. The Times of Israel confirmed the 11,000-target figure from the briefing. (Source: Times of Israel, March 31, 2026.)
For context: during the first Gulf War in 1991, the US-led coalition flew approximately 100,000 sorties over 43 days, striking thousands of targets in Iraq. During Operation Shock and Awe in the 2003 Iraq invasion, roughly 1,700 air sorties were flown in the first 24 hours. The Iran war target count — 11,000 in 30 days — reflects a sustained, high-tempo campaign focused specifically on degrading Iran's military capability to fight and resupply, per Caine's stated objective of "interdicting and destroying the logistical and supply chains" that feed Iran's missile, drone, and naval programs. (Source: Business Insider; historical comparisons from public military records.)
The New York Times reported that the 11,000 strikes have in effect choked off Iran's ability to replace munitions destroyed in the bombing campaign — meaning the war is increasingly asymmetric in terms of Iran's ability to sustain offensive operations. (Source: The New York Times, March 31, 2026.)
What the B-52 Can Now Do
With overland access, the B-52's role expands significantly. The aircraft can carry a variety of conventional weapons including the Massive Ordnance Penetrator (a 30,000-pound bunker-buster), cruise missiles, precision-guided bombs, and conventional gravity bombs in large quantities. It has a payload capacity of approximately 70,000 pounds and a combat range of over 8,800 miles. (Source: Business Insider, citing US Air Force specifications.)
Notably, some B-52s remain capable of nuclear operations. The US Air Force fields nuclear-capable B-52H variants alongside conventional-only versions. The Pentagon briefing made no mention of nuclear operations, and all confirmed US strikes in the Iran war have been conventional. This is noted for factual completeness only — there is no confirmed information suggesting nuclear weapons have been used or are being considered.
The B-52 is also undergoing major upgrades including the Commercial Engine Replacement Program, for which Boeing received a contract worth more than $2 billion in December 2025. The Air Force plans to keep the fleet operational until 2050. (Source: Business Insider, March 31, 2026.)
The Broader Picture on Day 32
The B-52 announcement came as several other significant military and diplomatic developments unfolded on March 31:
- The US struck Isfahan's ammunition depot with 2,000-pound bunker-buster bombs (Wall Street Journal/US official, reported earlier Tuesday).
- The IRGC threatened to target 18 US technology companies in the region beginning April 1 at 8pm Tehran time (India Today, Hindustan Times).
- Iran's President Pezeshkian said Tehran has the "necessary will" to end the war if security is guaranteed (AFP via Moneycontrol).
- Trump's self-imposed April 6 deadline for a deal or intensified strikes remains six days away.
The B-52 missions represent the clearest military signal yet that Iran's capacity to defend its own airspace has been fundamentally altered — not just degraded, but hollowed out sufficiently to risk the most vulnerable major bomber in the US fleet. Whether that translates into diplomatic leverage or further escalation before April 6 remains, as of publication, unresolved.