The website Deagel.com describes the MOAB as follows: the GBU-43/B, also known as Massive Ordnance Air Blast (MOAB) or Mother Of All Bombs, is a 20,000-pound class bomb designed to hit large areas of enemy territory to achieve a terrifying psychological impact. It uses a GPS-based navigation system and a single blast-type warhead. The yield of this weapon is equivalent to 11-tons of TNT, obliterating an area of 200-250 meters radius.
The MOAB bomb was developed to be available for the Iraq campaign in 2003 (Operation Iraqi Freedom), but it was not deployed. It has been designed to be dropped by an MC-130 Combat Talon aircraft. The final developmental test was carried out on March 11, 2003. It was employed for the first time by the US Air Force to fight the Islamic State in Afghanistan on April 13, 2017.