Donald Trump Jr. on Friday hailed the decision to drop the largest non-nuclear bomb in America's arsenal on ISIS fighters in Afghanistan, arguing that President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE was following through on one of his campaign promises.

Bomb the hell out of ISIS: ✔️



Another promise kept #Moab #maga — Donald Trump Jr. (@DonaldJTrumpJr) April 14, 2017

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The U.S. military dropped the GBU-43 Massive Ordnance Air Blast (MOAB) weapon because

The munition, also called the "Mother of All Bombs," struck a series of tunnels ISIS militants used in northeast Afghanistan to attack American and Iraqi forces, according to the White House.

An Air Force special operations command used the bomb on the order of Army Gen. John Nicholson.

President Trump declined to say Thursday whether he directly authorized the strike, saying that he's generally given the military authorization to make such decisions.

"We have the greatest military in the world, and they’ve done a job, as usual, so we have given them total authorization," he said.

Trump has long promised to aggressively attack ISIS, something he regularly expressed on the campaign trail.

"I would bomb the hell out of ISIS," Trump said during a press conference in November 2015.

"We are not doing much. We have a president that thinks ISIS has been contained. We have a president that doesn't know what is happening."