GBU-43/B Massive Ordnance Air Blast enters US military strike options for Iranian nuclear and energy sites

9 min read
Donald Trump - Instagram Foto: Donald Trump - Instagram

United States military planners have drafted operational strike packages against Iran that include the potential deployment of the GBU-43/B Massive Ordnance Air Blast (MOAB), commonly known as the “mother of all bombs”. The inclusion of the largest conventional, non-nuclear munition in the American arsenal comes as Tehran vows to maintain a dual strategy of armed confrontation and diplomatic negotiations to force concessions from Washington.

The contingency plans prepared for President Donald Trump target substantial portions of Iranian energy infrastructure alongside facilities tied to Tehran’s nuclear program. Among the primary locations listed in the military documents is Pickaxe Mountain, a deeply buried underground complex near Natanz where intelligence agencies from the United States and Israel suspect Iran stores nuclear components. Officials familiar with the discussions disclosed the existence of these strike options on Thursday, October 15, 2026, though the United States Department of Defense at the Pentagon in Washington has not officially confirmed the specific target lists. White House officials stated that the administration does not comment on sensitive military planning while noting that President Trump keeps all options available to prevent Iran from acquiring a nuclear weapon.

Donald Trump - Reprodução / The White House
Photo: Donald Trump – Reprodução / The White House

Defense officials and military analysts within the United States government have raised technical doubts regarding whether the GBU-43/B can actually destroy underground nuclear halls fortified beneath thick layers of granite. Beyond questions over subterranean effectiveness, officials pointed to the severe risk of civilian casualties given the weapon’s wide surface blast radius. “The MOAB is a massive information operation type weapon that is great for huge area clearance but not much else. It is definitely not designed as a deep penetrator warhead,” a source familiar with the military planning stated. According to the operational outlines, a renewed offensive could be ordered either before or after the United States midterm legislative elections scheduled for November 3, 2026, and would be executed prior to a potential drawdown and retrograde of American forces from the area of responsibility managed by United States Central Command (CENTCOM), the military combatant command overseeing operations across the Middle East.

Technical specifications of the 9.7-ton munition and military casualty figures

Developed by the United States Air Force in 2003 ahead of the Iraq war, the GBU-43/B is a GPS-guided air-blast munition measuring more than nine meters in length. Unlike specialized bunker-busting ordnance engineered to burrow through rock and reinforced concrete before exploding, the MOAB is designed to detonate in the air just above the ground. During military testing in March 2003, the weapon generated a mushroom cloud visible from approximately 20 miles away, demonstrating a surface blast capable of leveling an area equivalent to nine city blocks.

The consideration of such heavy ordnance reflects the intensity of the broader regional conflict that has unfolded over the past eight months. The core technical parameters of the weapon and the current human cost of the military campaign for American forces include:

  • Evaluated munition: GBU-43/B Massive Ordnance Air Blast (MOAB), a non-nuclear, GPS-guided air-blast bomb engineered for wide-area surface clearance.
  • Total ordnance weight: 21,600 pounds, equivalent to approximately 9.7 tons (or 9,800 kilograms).
  • Designated planning targets: Iranian energy supply infrastructure and subterranean nuclear installations, specifically the Pickaxe Mountain complex near Natanz.
  • United States military casualties: 21 service members killed and 865 wounded in the war against Iran, according to official figures released by the US Department of War.

Statements from Donald Trump in Arizona and Mohammad Bagher Ghalibaf in Tehran

Speaking at a political rally in Bullhead City, Arizona, on Wednesday, October 14, 2026, President Donald Trump sharply criticized the unauthorized disclosure of sensitive military discussions regarding potential strikes on Iran ahead of the November congressional vote. “In the old days, we used to shoot leakers,” Trump said during his remarks in Arizona. Days earlier, on Thursday, October 8, 2026, the American president had stated that he would not resume military strikes against Iranian territory prior to the midterm elections, a position taken as the White House confronts domestic political pressure over rising energy costs for American consumers.

In separate remarks addressing the trajectory of the conflict, Trump reiterated his administration’s baseline demand regarding Tehran’s atomic capabilities. “The war against Iran will end very soon. The moment I want it to end, it will happen. They will never have nuclear weapons,” the president declared. Some military advisers indicated that executing a high-profile strike package prior to a troop retrograde in the CENTCOM theater could be used by the administration to declare a decisive conclusion to the campaign before withdrawing personnel.

In the Iranian capital of Tehran, the Speaker of the Parliament of Iran (the head of the nation’s legislative branch), Mohammad Bagher Ghalibaf, delivered a televised address on Wednesday (14) outlining the government’s wartime posture. Ghalibaf affirmed that Iran will continue to conduct military operations and diplomatic talks simultaneously, leveraging its armed forces, regional influence, and negotiating channels to compel Washington to back down. “When we say that we both fight and negotiate, we do not mean an endless war or perpetual talks; on the contrary, we fight to drive the enemy to despair so that it accepts our demands or accepts defeat,” Ghalibaf stated, while accusing the United States government of breaking past commitments. “America must be penalized and forced to alter its conduct, so that it understands it has to accept the just demands of the Iranian nation,” the legislative leader added. As the rhetoric escalates, Iranian military units have been reinforcing air defenses and physical fortifications around nuclear and energy sites in preparation for potential American bombing runs.

Commercial ship sinkings in the Strait of Hormuz and Brent crude oil surge

The prolonged military confrontation has severely disrupted commercial maritime shipping through the Strait of Hormuz, threatened civilian and oil infrastructure in Saudi Arabia, and driven up global energy benchmarks. On Wednesday (14), international Brent crude oil traded at approximately US$ 105 per barrel, up from roughly US$ 98 per barrel recorded at the end of September 2026. In the strategic waterway connecting the Persian Gulf to the Gulf of Oman, Iranian forces have struck more than 14 commercial vessels over a two-week span, making October the most violent month for merchant shipping since the war began.

Learn more: US president issues stark warning on Iran at global assembly, sparking diplomatic concern

Among the casualties of the maritime campaign is the GFS Pride, a 2008-built, Singapore-flagged container ship with a carrying capacity of 2,824 TEUs (twenty-foot equivalent units, a standard maritime industry measure representing more than 2,500 containers). The vessel was struck by projectiles on Tuesday, October 13, 2026, approximately one nautical mile east of Ras Makhbuq, Oman, while operating on a route between Khor Fakkan, Fujairah, and Karachi. The impact sparked an onboard fire, and the ship sank in the Strait of Hormuz the following day, Wednesday (14). All 21 crew members were evacuated without injuries, according to the Maritime and Port Authority of Singapore (MPA), which noted that no Singaporean nationals were aboard. Accounts of the sinking remain contested: the Islamic Revolutionary Guard Corps Navy (IRGC) claimed the vessel struck a naval mine after entering an unauthorized and dangerous corridor, whereas international maritime security monitors reported the ship was hit by unidentified aerial projectiles.

On the same day the GFS Pride foundered, a second Singapore-registered container ship, the 2015-built, 4,350-TEU GFS Giselle, was struck during an inbound transit at approximately 16:40 UTC. The vessel, which serves a route linking Fujairah, Khor Fakkan, and Nhava Sheva in India, sustained hull damage. However, it remained operational and navigated under its own propulsion to a safe anchorage with all 22 crew members unharmed. Both vessels are operated by United Arab Emirates-based Global Feeder Shipping, a company in which Abu Dhabi-based AD Ports holds an 81% ownership stake. The MPA condemned the strikes on merchant vessels as unprovoked breaches of the United Nations Convention on the Law of the Sea. In addition to the two container ships, the International Maritime Organization (IMO), a United Nations agency regulating global shipping, confirmed on Wednesday (14) that the Antigua and Barbuda-flagged bulk carrier Cape Dao sank following an earlier projectile strike on September 23, 2026, that killed one crew member.

Alongside the maritime escalation—which also saw at least six vessels hit on Sunday, October 11, 2026, and four separate attack warnings covering three container ships and an oil tanker issued by United Kingdom Maritime Trade Operations (UKMTO) on Tuesday (13)—Iranian-backed Houthi rebels in Yemen have expanded missile and drone barrages against Saudi Arabia. The cross-border strikes hit the headquarters of the state oil giant Saudi Aramco in the eastern city of Dhahran as well as King Khalid International Airport in the capital city of Riyadh. To halt the regional hostilities, Tehran demands the complete lifting of the American naval blockade and economic sanctions, paired with the full withdrawal of United States military forces from the Middle East.

Afghanistan combat precedent in 2017 and the 2026 Operation Epic Fury campaign

Despite its inclusion in current Pentagon planning documents, the GBU-43/B has never been dropped on Iranian soil. The sole combat deployment of the munition by the United States armed forces took place in April 2017, during Donald Trump’s first presidential term. In that operation, American forces dropped the bomb on an underground network of tunnels and bunkers used by the extremist group Islamic State Khorasan Province (ISIS-K) in Afghanistan, killing more than 90 militants.

The current full-scale conflict involving the United States, Israel, and Iran erupted on February 28, 2026, when American and Israeli forces launched coordinated military strikes against Iranian targets under the codename Operation Epic Fury. Although major American combat operations were later paused to allow for diplomatic initiatives, negotiations have remained deadlocked since mid-2026, leaving the region in an active war of attrition across air and sea corridors.

Key dates of the 2026 Middle East conflict and upcoming US political calendar

The progression of the military campaign from the initial February bombardment to the current naval crisis in the Persian Gulf spans several critical dates leading up to the American legislative elections:

  • February 28, 2026 — The war between the United States, Israel, and Iran begins as American and Israeli forces launch coordinated military strikes against Iranian territory under Operation Epic Fury.
  • September 23, 2026 — The Antigua and Barbuda-flagged bulk carrier Cape Dao is struck by a projectile near the Strait of Hormuz in an attack that kills one crew member and eventually causes the vessel to sink.
  • October 8, 2026 — President Donald Trump publicly states that the United States will not resume military strikes against Iran prior to the upcoming American midterm elections.
  • October 10, 2026 — Missile and drone attacks launched by Yemen’s Houthi rebels strike King Khalid International Airport in Riyadh, Saudi Arabia, leaving 13 people dead.
  • October 11, 2026 — At least six commercial vessels are struck in a single day during transit operations in the Strait of Hormuz.
  • October 13, 2026 — The 2,824-TEU Singapore-flagged container ship GFS Pride is hit by projectiles near Ras Makhbuq, Oman, catching fire as UKMTO logs four verified attack warnings in the waterway.
  • October 14, 2026 — The GFS Pride sinks in the Strait of Hormuz, the 4,350-TEU GFS Giselle suffers hull damage from a projectile hit, Brent crude oil reaches approximately US$ 105 per barrel, Donald Trump speaks in Bullhead City, and Mohammad Bagher Ghalibaf addresses the Iranian nation on television.
  • October 15, 2026 — United States officials disclose that Pentagon military planners have added the 21,600-pound GBU-43/B bomb to strike options targeting Iranian energy sites and the Pickaxe Mountain nuclear complex.
  • November 3, 2026 — Scheduled date for the United States midterm congressional elections.

Luís Henrique Costa é jornalista formado pela FMU, editor-chefe e fundador do Mix Vale, portal de notícias em atividade desde 2013. Responde pela direção editorial do veículo, que cobre Brasil e mundo em economia, benefícios sociais, esportes, tecnologia, ciência e entretenimento. Atua na área há mais de 15 anos e lidera uma equipe de cerca de 15 colaboradores.

Notícias relacionadas