A GBU-43/B Massive Ordnance Air Blast Bomb (MOAB), nicknamed 'Mother Of All Bombs', was dropped on a tunnel complex of ISIS-Khorasan.

Also known as the "mother of all bombs," the GBU-43 is a 21,600 pound (9,797 kg) GPS-guided munition and was first tested in March 2003.

Votel said Pakistan's counterterrorism and counterinsurgency campaigns remain vital to targeting militants that threaten the United States ...