From the Daily Mail:
The United States has dropped its largest non-nuclear weapon after it targeted ISIS a network of caves and tunnels in eastern Afghanistan.
U.S. forces used a GPS-guided GBU-43 bomb, which is 30 feet long and weighs a staggering 21,600 pounds.
A crater left by the blast is believed to be more than 300 meters wide. It has been described as the 'Mother Of All Bombs' – a play on the 'MOAB' acronym, which actually stands for 'Massive Ordnance Air Burst.'
White House press secretary Sean Spicer told reporters that MOAB is 'a large, powerful and accurately delivered weapon' whose use was intended to collapse underground spaces used by ISIS terrorists to move freely and attack U.S. and allied troops.