President Trump, speaking Wednesday at a memorial ceremony at the Pentagon, said the 9/11 terrorist attacks are “seared into our souls” and offered the family members of those killed on that day 18 years ago “our unwavering loyalty.”

“For every American who lived through that day, the September 11th attack is seared into our soul. It was a day filled with shock, horror, sorrow and righteous fury,” Trump told the solemn gathering at the Pentagon.

Addressing the families of the 184 killed when a hijacked plane crashed into the building at 9:37 a.m., Trump said he and his wife “are united with you in grief.”

“We offer you all that we have. Our unwavering loyalty. Our undying devotion. And our eternal pledge that your loved ones will never, ever be forgotten,” he said.

The president also related how he canceled talks at Camp David with members of the Taliban, who harbored the al Qaeda terrorists in Afghanistan while they planned their attacks, and vowed that the US would never allow them to harm Americans again.

“And if for any reason, they come back to our country, we will go wherever they are, and use power, the likes of which the United States has never used before. And I’m not even talking about nuclear power. They will never have seen anything like what will happen to them. No enemy on Earth can match the overwhelming strength, skill and might of the American armed forces​,” the president said.

He recounted how he called off the talks after the Taliban admitted carrying out a bombing in Kabul that killed ​Army Sgt. Elis A. Barreto Ortiz.

​”​They thought they would use this attack to show strength, but actually what they showed is unrelenting weakness​,” he said.