On Thursday evening four US officials confirmed the military had used the “mother of all bombs” for the first time ever in a strike against the jihadis.
The bomb was dropped over Afghanistan's Nangarhar province and the blast radius of the 21,000-pound giant is believed to be more than 300 metres.
Speaking after the news broke Donald Trump said: “We have given them total authorisation.
“We have incredible leaders in the military. We have an incredible military. We are very proud of them.
On Thursday US officials confirmed the military had used the ‘mother of all bombs’ on ISIS
See the moment US military drops 'MOTHER OF ALL BOMBS' on ISIS
Fri, April 14, 2017
This is the moment the US dropped a Massive Ordnance Air Blast Bomb, the largest non-nuclear weapon in its arsenal, on a suspected Islamic State stronghold in Afghanistan
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“This was another successful mission.”
Sean Spicer, President Trump’s spokesman, said the US was taking the threat from ISIS “very seriously”.
He said: “In order to defeat the group we must deny them operational space. Which we did.
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“The United States took all precautions necessary to prevent civilian casualties and collateral damage as a result of the operation.”
We have given them total authorisation
In a speech last week to the American people, he said preventing and deterring the use of chemical weapons was in the "vital national security interest of the US".
Mr Trump said: "On Tuesday, Syrian dictator President Bashar al-Assad launched a horrible chemical attack on innocent civilians. Using a deadly nerve agent, Assad choked out the lives of helpless men, women, and children.
“It was a slow and brutal death for so many. Even beautiful babies were cruelly murdered in this very barbaric attack. No child of God should ever suffer such horror.
“Tonight, I ordered a targeted military strike on the airfield in Syria from where the chemical attack was launched.
“It was in the vital national security interest of the US to prevent and deter the use of deadly chemical weapons.
“There can be no dispute that Syria used banned chemical weapons, violated its obligations under the chemical weapons convention and ignored the urging of the UN security council.”