President Donald Trump has appeared to double down on his claim that the U.S. military's arsenal includes conventional weapons that are more powerful than nukes.
While commemorating the 18th anniversary of the Sept. 11 attacks Wednesday at the Pentagon, the president warned terrorists that they would be obliterated if they attacked the United States again.
"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," Trump said. "And I'm not even talking about nuclear power. They will have never seen anything like what will happen to them."