FLASH NEWSUS Iran War MOAB Bomb: What the 21,600lb Weapon Can Do

Inside the 21,600lb MOAB Bomb the US May Deploy in Iran

As the US-Iran conflict continues into its eighth month following its start on February 28, US military planners have developed potential strike options that include the GBU-43/B Massive Ordnance Air Blast. Known colloquially as the “Mother of All Bombs” (MOAB), the weapon is being considered for potential operations against Iranian energy infrastructure and nuclear facilities if orders are issued to renew combat operations following the November 3 midterm elections.

The potential deployment of the largest non-nuclear weapon in the US military inventory would mark a notable escalation in the ongoing conflict.

Understanding the GBU-43/B MOAB

The GBU-43/B is a GPS-guided, conventional air-blast warhead designed to neutralize large-area surface targets, cave networks, and tunnel entrances.

• Total Weight: 21,600 pounds (approximately 9.8 tonnes)
• Length: 30 feet (9.1 metres)
• Explosive Payload: 18,700 pounds (approximately 8.5 tonnes)
• Blast Radius: Capable of devastating an area equivalent to nine city blocks
• Deployment Method: Dropped from cargo aircraft, such as an MC-130 transport plane, rather than standard fighter jets

Developed in just nine weeks ahead of the 2003 Iraq War, the MOAB is engineered to detonate shortly before impact with the ground. This air-burst mechanism directs the blast energy horizontally across a wide area rather than burying the force into the earth.

MOAB vs. Bunker-Buster Munitions

While the MOAB holds the largest explosive payload among conventional US munitions, it is not the heaviest bomb in service. That title belongs to the GBU-57 Massive Ordnance Penetrator (MOP), commonly referred to as a bunker buster.

The GBU-57 weighs roughly 30,000 pounds overall, but carries a warhead weighing approximately 5,300 pounds, roughly one-third the explosive force of the MOAB. While the GBU-57 is designed specifically to burrow deep underground before detonating, analysts have questioned whether the MOAB’s surface-blast design can effectively destroy deeply buried nuclear sites without specialized penetrating capabilities.

Operational History

The GBU-43/B has been used in combat exactly once. On April 2017, during President Donald Trump‘s first term, an Air Force Special Operations Command MC-130 dropped a MOAB on a Daesh tunnel complex in the Achin district of Nangarhar Province, Afghanistan.

The strike occurred at 7:32 PM local time and reportedly killed 92 militants while destroying the underground network.

💡 Quick FAQ & IntelligenceTap to Expand

Q: What is the explosive weight of the GBU-43/B MOAB?

The GBU-43/B carries an explosive payload weighing around 18,700 pounds (8.5 tonnes) out of a total bomb weight of 21,600 pounds (9.8 tonnes).

Q: How is the MOAB delivered to its target?

Because of its massive size and weight, the MOAB cannot be carried by conventional fighter jets; it is deployed from military transport aircraft such as the MC-130.

Q: Has the US military used the MOAB in combat before?

Yes, it was dropped once in combat in April 2017 against a Daesh tunnel complex in Nangarhar Province, Afghanistan.