The GBU-72 is a 5,000-pound hardened penetrator weapon with a delayed fuse that survives the entire penetration sequence through reinforced concrete and rock before detonating at the target depth, enabling it to destroy underground missile facilities that previous bunker busters could not reach; this weapon's dual guidance system allows pilots to program GPS coordinates before takeoff or update targeting coordinates in real-time during the attack run, making it the most capable deep strike weapon in the US military inventory for neutralizing hardened underground targets.
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Iran's Desperate Attack On Ship Fails As U.S. Drops INSANE Bunker Buster Bomb
Added:Morning everybody. It's June 12th, 2026.
And this footage right here is showing something wild. Something massive being dropped on Isvahan, Iran just yesterday.
Underground missile storage facilities with massive ballistic missile stockpiles going up, obliterated from the inside by a bunker buster bomb. The GBU72, typically delivered from an F-15E Strike Eagle. This is a 5,000lb hardened penetrator. one of the most capable deep strike weapons in the entire US military inventory. And today we are breaking down exactly how that strike happened, why the GBU72 was the weapon pulled from the bench for this mission, and what the footage of that mountain lighting up from the inside actually tells us.
Before we go further, drop your country in the comments right now. We have viewers from across the US, the UK, Malaysia, India, Canada, and beyond. Let us know where you're watching from because this story matters everywhere.
Now, let's talk about what you're actually seeing in that footage. When a weapon storage facility is struck, especially an underground one, the pressure from the initial detonation has nowhere to go. It channels through tunnels, through corridors, through every connected chamber inside that mountain, and then it vents. That is what those secondary explosions are.
That is why the mountain appears to answer back long after the weapon has done its job. Each eruption you are seeing is another section of that underground complex being destroyed from within. Iran spent roughly four decades engineering these facilities to survive.
conventional air campaigns. They are buried deep inside mountains south of Isfahan, reinforced with concrete and hardened against everything a standard precisiong guided bomb could deliver.
The entrance tunnels you can spot and satellite imagery are deliberately blended into terrain designed to look like nothing from the air. And for a long time, that strategy worked. Strikes would damage the surface, damage the entrances, but the missiles stored deep inside the mountain would survive. The next morning, launches would continue.
That is the tactical problem this strike was designed to solve and it is the reason the GBU72 exists. The GBU72 advanced 5,000lb penetrator made its combat debut earlier in this conflict.
Initially used along the straight of Hormuz's coastline to destroy underground drone and missile storage.
It performed exactly as designed and now it has been brought to Isvahan, the heart of Iran's ballistic missile production ecosystem. Here is what makes this weapon genuinely different from anything that came before it. The GBU72 is not just bigger than previous bunker busters. It is smarter. It carries a delayed fuse that is hardened to survive the entire penetration sequence, punching through reinforced concrete, through packed earth, through rock and only detonating once it has reached the depth where the enemy believed physics protected them. That fuse survival is the engineering breakthrough that defines this weapon. On top of that, it is a dual guidance platform. A pilot can program pre-planned GPS coordinates before takeoff and release the weapon from a safe standoff distance with a single pickle button press. Or the weapon systems officer, the Wizzo in the back seat of the F-15E can update targeting coordinates in real time during the attack run. If the laser from the targeting pod loses track if the aircraft has to maneuver hard to defeat a surfaceto-air missile, the GPU72 locks onto the last known laser point and uses that as its new GPS coordinate. It does not lose the target. It adapts. That is the versatility that makes it the right weapon for exactly this kind of mission.
Now, some of you watching are already asking the right questions. We have seen close to 20 separate bunker buster strikes on the Isvahan complex area over recent months. B2 Spirits, B-52s, earlier F-15E strikes with GPU 57s. And yet, reports indicate missiles were still being launched from those same mountains the following mornings. How does that happen? The answer is depth and redundancy. The entrances you see in satellite imagery are just the doors.
The actual storage and assembly areas are buried far deeper inside the mountain than any previous weapon in the US inventory could reliably reach.
Iran's engineers designed for exactly this scenario. They built multiple exit points so that even if one tunnel was collapsed, crews could wheel missiles out through a different route and launch. The GBU57, the previous generation penetrator, was effective against many hardened targets. But against the deepest sections of a facility like this one, there were physical limits to how far it could reach before detonating. The GBU72 pushes that limit further, significantly further. And when it detonates at the right depth, the pressure wave does not just destroy what is directly in front of it. It propagates through the tunnel network, through the connected chambers, through every space Iran's engineers spent four decades building. That is what turns a single strike into a mountain that lights up from the inside.
Let us look at the delivery platform because this matters for understanding the pace of this campaign. The F-15E Strike Eagle operating from bases already inside the theater does not require the kind of mission planning and transit time that a B2 mission from Missouri demands. A B2 strike on a target like Isvahan is a global power projection statement. It takes planning, coordination, and hours of transit. An F-15E strike with a GBU72 from a regional base is a different kind of option. It is a two ship, a 30 to 45minute flight, weapons on target, and recovery. That speed and flexibility changes how commanders can use this weapon. It is not a weapon you use once for effect. It is a weapon you can use repeatedly as intelligence identifies new targets. Meanwhile, while these strikes were being processed by the world, Iran's IRGC Navy declared the Strait of Hermuz closed to all vessels.
Hours after that declaration, Iranian forces fired on a tanker in darkness.
Two Iranian attack drones were neutralized by coordinated US Navy and Air Force response. The tanker continued its transit. Hundreds of ships are now moving through the straight and coordinated safe corridors that US Central Command has established and is actively defending. The declaration and the reality are two different things.
And that gap between what Iran says and what Iran can currently enforce is one of the most significant strategic developments of this entire conflict. We are going to break down exactly what that means for the deal negotiations, for the factions inside Iran's leadership that are now visibly fracturing, and for what happens next if those factions choose to escalate rather than sign. Because that is where this gets complicated and that is where the next part of this analysis begins. Here is where we left off. Bunkerbuster strikes have gone into the isvahan missile complex. The straight of Hormuz declaration has been made and immediately contradicted by reality. And President Trump posted on Truth Social that a deal was approved at the highest level of Iranian leadership, only for factions within that leadership to publicly deny any agreement was signed.
5 hours after announcing the next strike package was canled, the situation on the ground looked like this. Iran's air defense crews, who had been operating under sustained pressure for weeks, were left waiting to find out whether the night would bring more strikes or silence. That uncertainty is not accidental. It is a condition of negotiation. What is actually happening inside Iranian leadership right now is worth understanding carefully. Iran does not have a unified command structure the way a western military does. You have the Supreme Leader's office, the IRGC command, the formal government and presidency and various factions within each of those that hold different views on how this conflict should end and what Iran should be willing to accept. When Trump posted that a deal had been approved at the highest level and Iranian officials said nothing was signed, those two statements can both be true simultaneously and that is the fracture point. Some factions are looking for an exit. Some factions believe continued resistance is the only acceptable path. And the GBU72 strikes are landing directly into that internal debate. Every successful strike on a ballistic missile facility does two things at once. It degrades the physical capability Iran would use to enforce any future deterrence. And it shifts the internal argument inside Thran toward the factions that are saying this conflict needs to end now before the losses become irreversible. Iran's ballistic missiles are not just weapons.
They are the foundation of Iran's regional deterrence posture. They are what Iran uses to signal that it can impose costs on anyone who threatens its survival. Israel, US bases in the region, Gulf State infrastructure, commercial shipping. If that stockpile is being systematically reduced, the factions inside Iran that depend on that deterrent for their political position lose leverage not just militarily but internally that is the strategic logic behind continuing strikes even while negotiations are ongoing. You are not bombing a deal. You are shaping the terms of one. Now let us talk about what Iran actually wants from any agreement.
Based on everything reported from negotiating channels, Iran's core goals are financial relief to rebuild damaged infrastructure, preservation of as much of their ballistic missile program as possible, and keeping the specific numbers of their remaining stockpile out of any written agreement. That last point is significant. Iran knows that the moment a verified stockpile number is in an agreement, that number becomes a ceiling and a target for verification.
Keeping that number ambiguous preserves optionality. The United States position based on public statements from the administration in Sententcom centers on uranium enrichment limits, missile program constraints, and the free flow of commercial shipping through the Straight of Hormuz. That last point, the Strait, is the one with the most immediate global economic consequence.
Approximately 20% of the world's oil passes through the Straight of Hormuz.
When Iran declares the straight closed, markets move. Insurance premiums for tankers spike. Shipping companies reroute around Africa, adding weeks and significant cost to every voyage. The US blockade and safe corridor system is currently containing that economic impact. But it requires continuous active presence and engagement to maintain. Every drone Iran launches at a tanker, even drones that are intercepted, is a signal to the shipping market that the risk has not gone to zero. That signal has a price and it is paid by every country that depends on that oil moving. Here is what the comments section has been asking and it is a fair question. If Iran's missiles keep launching even after strikes, is any of this actually working? The answer requires looking at scale. Iran is estimated to have had somewhere between 10,000 and 15,000 ballistic missiles across various range categories before this conflict escalated. That is a number designed to overwhelm any regional missile defense system through sheer volume. Reducing that stockpile not to zero but to a level where saturation attacks become harder changes the military calculus for every potential target in the region. It does not need to reach zero to matter. It needs to reach a level where Iran's commanders have to make choices about what they are willing to expend and what they are holding in reserve. That is the point at which deterrence starts operating in a different direction. The Senate Armed Services Committee this week approved a bill establishing a robotics and autonomous systems combatant command. A full four-star command dedicated entirely to drones and autonomous weapons. That is not a future development. That is the institutional recognition that what we are watching in this conflict, drone intercepts, autonomous naval engagements, the drone boat that rescued an Apache crew, is the present and near future character of warfare. The investment the United States is making in these systems and the command structure being built around them reflects lessons being absorbed from this conflict in real time. So where does this go from here? There are three realistic paths forward based on what the open source record shows. The first is a negotiated agreement in the next several days. This requires the factions inside Iran that want an exit to prevail over those that do not. It requires agreement on enrichment limits and some form of missile program constraint. And it requires Iran to accept that the straight of Hormuz remains open to international shipping, not as a concession, but as a stated commitment. The second path is continued strikes without a deal with Iran managing the conflict at a lower intensity. launching enough to signal resistance without triggering the kind of escalation that would threaten regime survival. This is the path that is most costly over time for everyone involved, including commercial markets and regional stability. The third path, the one that factions inside Iran who oppose any deal are pushing toward, is a decision to escalate significantly, betting that the costs imposed on the United States and its partners will eventually exceed the political will to continue. This is the path that the GBU72 strikes are specifically designed to make less viable. If the missile stockpile that underwrites that escalation option is being reduced, the bet becomes harder to make and harder to sustain. What do you think happens from here? Is the deal signed in the next few days? Or do the hardline factions inside Thran push for one more round? And if strikes continue, how many more mountains does Iran have left to hide inside? Let us know in the comments. If you found this breakdown useful, subscribe so you do not miss the next update because this situation is moving fast and the next development could change the entire picture. We will be here when it
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