World leaders gathered in Washington, DC, on Tuesday for the funeral ceremony for late Republican US Senator Lindsey Graham, who was instrumental in advocating for the war on Iran and a staunch supporter of Israel.

Among those attending were Ukrainian President Zelensky and Israeli Prime Minister Netanyahu.

Delivering remarks at the ceremony, Trump called Graham a "beloved friend" and "a true American original".

"He never saw a war that he didn’t like," Trump said, drawing laughter before adding that Graham supported military power "for the good of our country."

"Above all, Lindsey Graham believed in a strong America," Trump said. "He had unwavering faith in the righteousness of American power."