Washington, Sept. 11 -- US President Donald Trump on Thursday said he would soon award conservative activist Charlie Kirk a Presidential Medal of Freedom, the nation's highest civilian honour.

Speaking at a ceremony outside the Pentagon marking the 24th anniversary of the September 11 attacks, Trump said the event honouring Kirk would be significant. "I can only guarantee you one thing: That will have a very big crowd," he remarked.

Trump opened his address by remembering Kirk, describing him as a close ally and an inspiration. "Let me express the horror and grief so many Americans, at the heinous assassination of Charlie Kirk, have felt," he said.

"Charlie was a giant of his generation, a champion of liberty and an inspiration to mill...