Fact Check: U.S. used bunker-buster bombs for the first time in combat against Iran.

Fact Check: U.S. used bunker-buster bombs for the first time in combat against Iran.

Published June 23, 2025
VERDICT
False

# Fact Check: U.S. Used Bunker-Buster Bombs for the First Time in Combat Against Iran ## What We Know The claim that the U.S. used bunker-buster bomb...

Fact Check: U.S. Used Bunker-Buster Bombs for the First Time in Combat Against Iran

What We Know

The claim that the U.S. used bunker-buster bombs for the first time in combat against Iran stems from recent military actions involving the GBU-57 Massive Ordnance Penetrator (MOP). This bomb, weighing 30,000 pounds, is specifically designed to penetrate deep underground targets, such as Iran's fortified nuclear facilities, including the site at Fordo, which is buried beneath a mountain (NPR).

Reports indicate that the U.S. conducted airstrikes on Iranian nuclear sites, utilizing these bunker-buster bombs as part of a coordinated military operation with Israel (BBC). However, it is crucial to note that while the GBU-57 has been developed and is capable of being used in combat, it has never been deployed in actual combat scenarios prior to this operation (NPR).

Analysis

The assertion that the U.S. used bunker-buster bombs for the first time in combat against Iran is misleading. The GBU-57, while a significant advancement in military technology, had not been previously used in any combat situation before the recent strikes in Iran. The distinction is important; the bomb itself may have been used operationally, but it was not used in combat prior to this event (NPR).

Furthermore, the credibility of the sources reporting on this event varies. NPR, a well-established news organization, provides detailed insights into the capabilities and history of the GBU-57, emphasizing its design for deep underground targets and its previous non-combat status (NPR). The BBC also reports on the operational details of the strikes, but the framing of the events can sometimes lead to sensational interpretations (BBC).

Conversely, other reports, such as those from USA Today and MSN, have framed the use of these bombs as their "first operational use," which can imply a combat context that is not entirely accurate. The term "operational use" can be interpreted differently, and without clear definitions, it may mislead the audience regarding the bomb's combat history (USA Today, MSN).

Conclusion

The claim that the U.S. used bunker-buster bombs for the first time in combat against Iran is False. While the GBU-57 was indeed used in the recent military strikes, it was not the first time it had been operationally deployed, as it had never been used in combat before this instance. The distinction between operational use and combat use is critical and should be clearly understood to avoid misinterpretation of military actions.

Sources

  1. What are 'bunker buster' bombs? : NPR
  2. How the US says it hit Iran's nuclear sites
  3. As U.S. Considers Using Bunker-Buster Bombs, Here's What It Takes to ...
  4. US bombs Iran: What to know about 'bunker buster' bomb - USA TODAY
  5. 30,000-pound bunker busters used for first time in Iran nuclear ... - MSN

Have a claim you want to verify? It's 100% Free!

Our AI-powered fact-checker analyzes claims against thousands of reliable sources and provides evidence-based verdicts in seconds. Completely free with no registration required.

💡 Try:
"Coffee helps you live longer"
100% Free
No Registration
Instant Results

Comments

Leave a comment

Loading comments...

More Fact Checks to Explore

Discover similar claims and stay informed with these related fact-checks

🔍
Partially True
🎯 Similar

Fact Check: Paul Krugman Paul Krugman We’re All Rats Now Time to take a stand, again, against racism Paul Krugman Jun 30, 2025 Zohran Mamdani’s upset victory in New York’s Democratic primary has created panic in MAGAland. Stephen Miller, the architect of Donald Trump’s deportation policies, waxed apocalyptic: Scott Bessent, the Treasury secretary, declared that New York is about to turn into “Caracas on the Hudson.” And Sen. Tommy Tuberville of Alabama basically declared New York’s voters subhuman, saying: These inner-city rats, they live off the federal government. And that’s one reason we’re $37 trillion in debt. And it’s time we find these rats and we send them back home, that are living off the American taxpayers that are working very hard every week to pay taxes. These reactions are vile, and they’re also dishonest. Whatever these men may claim, it’s all about bigotry. Miller isn’t concerned about the state of New York “society.” What bothers him is the idea of nonwhite people having political power. Bessent isn’t really deeply worried about Zamdani’s economic ideas. But he feels free, maybe even obliged, to slander a foreign-born Muslim with language he would never use about a white Christian politician, even if that politician were (like some of his colleagues in the Trump administration) a total crackpot. And while Tuberville stands out even within his caucus as an ignorant fool, his willingness to use dehumanizing language about millions of people shows that raw racism is rapidly becoming mainstream in American politics. Remember, during the campaign both Trump and JD Vance amplified the slanders about Haitians eating pets. And now that they’re in office, you can see the resurgence of raw racism all across Trump administration policies, large and small. You can see it, for example, in the cuts at the National Institutes of Health, which are so tilted against racial minorities that a federal judge — one appointed by Ronald Reagan! — declared I’ve never seen a record where racial discrimination was so palpable. I’ve sat on this bench now for 40 years. I’ve never seen government racial discrimination like this. You can see it in the renaming of military bases after Confederate generals — that is, traitors who fought for slavery. You can even see it in a change in the military’s shaving policy that is clearly custom-designed to drive Black men — who account for around a quarter of the Army’s new recruits — out of the service. So racism and bigotry are back, big time. Who’s safe? Nobody. Are you a legal immigrant? Well, the Supreme Court just allowed Trump to summarily strip half a million U.S. residents of that status, and only a fool would imagine that this is the end of the story. Anyway, when masked men who claim to be ICE agents but refuse to show identification are grabbing people off the streets because they think those people look illegal, does legal status even matter? Does it even matter if you’re a U.S. citizen? And the One Big Beautiful Bill Act is set to massively increase ICE’s funding — basically setting up a huge national secret police force. Now, maybe you imagine that you yourself won’t suffer from this new reign of bigotry and imagine that everyone you care about is similarly safe. But if that’s what you think, you’re likely to face a rude awakening. I personally don’t have any illusions of safety. Yes, I’m a native-born white citizen. But my wife and her family are Black, and some of my friends and relatives are foreign-born U.S. citizens. Furthermore, I’m Jewish, and anyone who knows their history realizes that whenever right-wing bigotry is on the ascendant, we’re always next in line. Are there really people out there naïve enough to believe MAGA’s claims to be against antisemitism, who can’t see the transparent cynicism and dishonesty? The fact is that the Trump administration already contains a number of figures with strong ties to antisemitic extremists. The Great Replacement Theory, which has de facto become part of MAGA’s ideology, doesn’t just say that there’s a conspiracy to replace whites with people of color; it says that it’s a Jewish conspiracy. So I’m definitely scared of what the many antisemites inside or with close ties to the Trump administration may eventually do. And no, I’m not frightened at all by the prospect that New York may soon have a somewhat leftist Muslim mayor. Anyway, my personal fears are beside the point. Everyone who cares about keeping America America needs to take a stand against the resurgence of bigotry. Because the truth is that we’re all rats now. MUSICAL CODA Discussion about this post Michael Roseman Jun 30 Edited For a while, American bigotry was ashamed of itself. Or pretended to be. Now it runs the government. Reply Share 106 replies Megan Rothery Jun 30 Edited Take a stand - Call. Write. Email. Protest. Unrelentingly. Use/share this spreadsheet as a resource to call/email/write members of Congress, the Cabinet and news organizations. Reach out to those in your own state, as well as those in others. Use your voice and make some “good trouble” ❤️‍🩹🤍💙 https://docs.google.com/spreadsheets/d/13lYafj0P-6owAJcH-5_xcpcRvMUZI7rkBPW-Ma9e7hw/edit?usp=drivesdk Reply Share 31 replies 852 more comments... No posts Ready for more? © 2025 Paul Krugman Privacy ∙ Terms ∙ Collection notice Start writing Get the app Substack is the home for great culture

Detailed fact-check analysis of: Paul Krugman Paul Krugman We’re All Rats Now Time to take a stand, again, against racism Paul Krugman Jun 30, 2025 Zohran Mamdani’s upset victory in New York’s Democratic primary has created panic in MAGAland. Stephen Miller, the architect of Donald Trump’s deportation policies, waxed apocalyptic: Scott Bessent, the Treasury secretary, declared that New York is about to turn into “Caracas on the Hudson.” And Sen. Tommy Tuberville of Alabama basically declared New York’s voters subhuman, saying: These inner-city rats, they live off the federal government. And that’s one reason we’re $37 trillion in debt. And it’s time we find these rats and we send them back home, that are living off the American taxpayers that are working very hard every week to pay taxes. These reactions are vile, and they’re also dishonest. Whatever these men may claim, it’s all about bigotry. Miller isn’t concerned about the state of New York “society.” What bothers him is the idea of nonwhite people having political power. Bessent isn’t really deeply worried about Zamdani’s economic ideas. But he feels free, maybe even obliged, to slander a foreign-born Muslim with language he would never use about a white Christian politician, even if that politician were (like some of his colleagues in the Trump administration) a total crackpot. And while Tuberville stands out even within his caucus as an ignorant fool, his willingness to use dehumanizing language about millions of people shows that raw racism is rapidly becoming mainstream in American politics. Remember, during the campaign both Trump and JD Vance amplified the slanders about Haitians eating pets. And now that they’re in office, you can see the resurgence of raw racism all across Trump administration policies, large and small. You can see it, for example, in the cuts at the National Institutes of Health, which are so tilted against racial minorities that a federal judge — one appointed by Ronald Reagan! — declared I’ve never seen a record where racial discrimination was so palpable. I’ve sat on this bench now for 40 years. I’ve never seen government racial discrimination like this. You can see it in the renaming of military bases after Confederate generals — that is, traitors who fought for slavery. You can even see it in a change in the military’s shaving policy that is clearly custom-designed to drive Black men — who account for around a quarter of the Army’s new recruits — out of the service. So racism and bigotry are back, big time. Who’s safe? Nobody. Are you a legal immigrant? Well, the Supreme Court just allowed Trump to summarily strip half a million U.S. residents of that status, and only a fool would imagine that this is the end of the story. Anyway, when masked men who claim to be ICE agents but refuse to show identification are grabbing people off the streets because they think those people look illegal, does legal status even matter? Does it even matter if you’re a U.S. citizen? And the One Big Beautiful Bill Act is set to massively increase ICE’s funding — basically setting up a huge national secret police force. Now, maybe you imagine that you yourself won’t suffer from this new reign of bigotry and imagine that everyone you care about is similarly safe. But if that’s what you think, you’re likely to face a rude awakening. I personally don’t have any illusions of safety. Yes, I’m a native-born white citizen. But my wife and her family are Black, and some of my friends and relatives are foreign-born U.S. citizens. Furthermore, I’m Jewish, and anyone who knows their history realizes that whenever right-wing bigotry is on the ascendant, we’re always next in line. Are there really people out there naïve enough to believe MAGA’s claims to be against antisemitism, who can’t see the transparent cynicism and dishonesty? The fact is that the Trump administration already contains a number of figures with strong ties to antisemitic extremists. The Great Replacement Theory, which has de facto become part of MAGA’s ideology, doesn’t just say that there’s a conspiracy to replace whites with people of color; it says that it’s a Jewish conspiracy. So I’m definitely scared of what the many antisemites inside or with close ties to the Trump administration may eventually do. And no, I’m not frightened at all by the prospect that New York may soon have a somewhat leftist Muslim mayor. Anyway, my personal fears are beside the point. Everyone who cares about keeping America America needs to take a stand against the resurgence of bigotry. Because the truth is that we’re all rats now. MUSICAL CODA Discussion about this post Michael Roseman Jun 30 Edited For a while, American bigotry was ashamed of itself. Or pretended to be. Now it runs the government. Reply Share 106 replies Megan Rothery Jun 30 Edited Take a stand - Call. Write. Email. Protest. Unrelentingly. Use/share this spreadsheet as a resource to call/email/write members of Congress, the Cabinet and news organizations. Reach out to those in your own state, as well as those in others. Use your voice and make some “good trouble” ❤️‍🩹🤍💙 https://docs.google.com/spreadsheets/d/13lYafj0P-6owAJcH-5_xcpcRvMUZI7rkBPW-Ma9e7hw/edit?usp=drivesdk Reply Share 31 replies 852 more comments... No posts Ready for more? © 2025 Paul Krugman Privacy ∙ Terms ∙ Collection notice Start writing Get the app Substack is the home for great culture

Jul 20, 2025
Read more →
Fact Check:  U.S. federal funds intended to train future government personnel were used to finance the work of Zohran Mamdani’s father, Mahmood Mamdani,
Unverified
🎯 Similar

Fact Check: U.S. federal funds intended to train future government personnel were used to finance the work of Zohran Mamdani’s father, Mahmood Mamdani,

Detailed fact-check analysis of: U.S. federal funds intended to train future government personnel were used to finance the work of Zohran Mamdani’s father, Mahmood Mamdani,

Aug 3, 2025
Read more →
Fact Check: That Executive Order 14169 (signed January 20, 2025) froze U.S. foreign aid—including PEPFAR—causing immediate disruptions in HIV programs across sub‑Saharan Africa and resulting in thousands of deaths within the first month, with projections of tens to hundreds of thousands of excess deaths if the freeze persists.
Partially True
🎯 Similar

Fact Check: That Executive Order 14169 (signed January 20, 2025) froze U.S. foreign aid—including PEPFAR—causing immediate disruptions in HIV programs across sub‑Saharan Africa and resulting in thousands of deaths within the first month, with projections of tens to hundreds of thousands of excess deaths if the freeze persists.

Detailed fact-check analysis of: That Executive Order 14169 (signed January 20, 2025) froze U.S. foreign aid—including PEPFAR—causing immediate disruptions in HIV programs across sub‑Saharan Africa and resulting in thousands of deaths within the first month, with projections of tens to hundreds of thousands of excess deaths if the freeze persists.

Jul 26, 2025
Read more →
Fact Check: HOUSE MAUI (noun) AREA MEDIAN INCOME (AMI) Abbreviated AMI,' this is the midpoint of all household incomes in a region. Calculated by the U.S. Department of Housing and Urban Development (HUD), I is used to determine who qualifies for rent or mortgage assistance.
True

Fact Check: HOUSE MAUI (noun) AREA MEDIAN INCOME (AMI) Abbreviated AMI,' this is the midpoint of all household incomes in a region. Calculated by the U.S. Department of Housing and Urban Development (HUD), I is used to determine who qualifies for rent or mortgage assistance.

Detailed fact-check analysis of: HOUSE MAUI (noun) AREA MEDIAN INCOME (AMI) Abbreviated AMI,' this is the midpoint of all household incomes in a region. Calculated by the U.S. Department of Housing and Urban Development (HUD), I is used to determine who qualifies for rent or mortgage assistance.

Jul 21, 2025
Read more →
Fact Check:  ICE just received $45 billion in funding for the next 4 years - more than the U.S. government spent on immigration detention during the Obama, Biden, and first Trump administrations Combined
True

Fact Check: ICE just received $45 billion in funding for the next 4 years - more than the U.S. government spent on immigration detention during the Obama, Biden, and first Trump administrations Combined

Detailed fact-check analysis of: ICE just received $45 billion in funding for the next 4 years - more than the U.S. government spent on immigration detention during the Obama, Biden, and first Trump administrations Combined

Jul 20, 2025
Read more →
Fact Check:  Satellite imagery released in July indicates that a U.S. TPS‑75 transportable radar system was damaged during Iran’s June 23 missile strike on Al Udeid Air Base in Qatar.
Partially True

Fact Check: Satellite imagery released in July indicates that a U.S. TPS‑75 transportable radar system was damaged during Iran’s June 23 missile strike on Al Udeid Air Base in Qatar.

Detailed fact-check analysis of: Satellite imagery released in July indicates that a U.S. TPS‑75 transportable radar system was damaged during Iran’s June 23 missile strike on Al Udeid Air Base in Qatar.

Jul 20, 2025
Read more →
Fact Check: U.S. used bunker-buster bombs for the first time in combat against Iran. | TruthOrFake Blog