The Bishop of Rome is not happy with the new title given to the largest non-nuclear United States bomb.

Pope Francis on Saturday criticized the naming of the U.S. military's biggest non-nuclear explosive as 'the Mother of All Bombs', saying the word 'mother' should not be used in reference to a deadly weapon.

The U.S. Air Force dropped such a bomb, officially designated as the GBU-43 Massive Ordnance Air Blast (MOAB) on Islamic State fighters in eastern Afghanistan last month. The nickname was widely used in briefings and reporting on the attack.

Pope Francis on Saturday criticized the naming of the U.S. military's biggest non-nuclear explosive as 'the Mother of All Bombs', saying the word 'mother' should not be used in reference to a deadly weapon

The U.S. Air Force dropped such a bomb, officially designated as the GBU-43 Massive Ordnance Air Blast (MOAB) on suspected Islamic State fighters in eastern Afghanistan last month. The nickname was widely used in briefings and reporting on the attack

'I was ashamed when I heard the name,' Pope Francis told an audience of students in Milan on Saturday.

'A mother gives life and this one gives death, and we call this device a mother. What is happening?'

Pope Francis told an audience of students in Milan on Saturday: 'I was ashamed when I heard the name. A mother gives life and this one gives death, and we call this device a mother. What is happening?'

Pope Francis is set to meet U.S. President Donald Trump on May 24 in a potentially awkward encounter given their opposing positions on immigration, refugees and climate change.

The MOAB unleashes a devastating fireball that incinerates and vaporizes anything within 30 feet upon detonation.

In the milliseconds following the initial blast in Afghanistan, all the oxygen would have been forced out of the tunnels and for hundreds of feet around, literally sucking the life out of ISIS terrorists, suffocating them as their lungs imploded.

Then, in a flash the fiery shockwave would have radiated outwards at the speed of sound for up to a mile, causing huge blunt force trauma injuries to anyone caught in its path, leveling buildings and trees.

The Pentagon estimates that 800 ISIS terrorists were in the area.

Its frightening power was unleashed by the United States for the first time in April when it was dropped on an ISIS camp in Afghanistan's Nangarhar Province, in order to obliterate underground tunnels used by the terrorists.

A crater left by the blast is believed to be more than 300 feet wide after it exploded just six feet above the ground. Anyone at ground zero was vaporized.

The bombs frightening power was unleashed by the United States for the first time in April when it was dropped on an ISIS camp in Afghanistan's Nangarhar Province, in order to obliterate underground tunnels used by the terrorists