“The Afghanistan strike had been in the works for a number of months, Martin reports. The weapon was brought into Afghanistan specifically for this mission. General John Nicholson, the commander of U.S. forces in Afghanistan, was required to get permission to use the weapon, but it’s unclear how far up the chain of command his request traveled.”
Read more: http://www.cbsnews.com/news/us-drops-mother-of-all-bombs-in-afghanistan-marking-weapons-first-use/