President Donald Trump warned Islamic terrorists not to return to the United States on the anniversary of the Sept. 11 terrorist attacks commemorated Wednesday at the Pentagon in Arlington, Virginia.

During his speech, the president acknowledged that he had scheduled “peace talks” with the Taliban a few days ago, but that he suspended them after the suicide bombing attack committed last week in Kabul, which claimed the lives of 12 people, including that of a “great American soldier from Puerto Rico,” was attributed to them.

“They thought they would use this attack to show strength. But actually, what they showed is unrelenting weakness,” the president said, noting that since that attack in the Middle East, the United States has decided to hit terrorists “harder than they have ever been hit before.”

 “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,” he continued.

At this point, President Trump said that although he did not refer to nuclear weapons, “they will have never seen anything like what will happen to them,” because “no enemy on Earth can match the overwhelming strength, skill, and might of the American Armed Forces.”

“Nearly 6 million young men and women have joined the United States Armed Forces. They have crossed seas, climbed mountains, trekked through deserts, and rushed into enemy compounds to face down the threat of radical Islamic terrorism,” he added.

He also remembered the “nearly seven thousand” fallen who gave their lives to protect their home, their flag, and the American way of life. “American freedom survives only because there are patriots willing to sacrifice everything in its defense,” he said.

“We do not seek conflict, but if anyone dares to strike our land, we will respond with the full measure of American power,” he concluded.