Following a tense Oval Office meeting between President Trump, Vice President J.D. Vance and Ukrainian President Volodymyr Zelenskyy, Sen. Lindsey Graham, R-S.C., said on Friday that Zelenskyy should resign and send someone else to the U.S. to negotiate or change.

"I've never been more proud of the president. I was very proud of J.D. Vance standing up for our country," he told reporters at the White House.

"He [Zelenskyy] either needs to resign and send somebody over that we can do business with or he needs to change," he added.

Graham said he was hopeful the mineral-rights agreement between the U.S. and Ukraine would be signed but now he is not sure if a deal can be made.

"After what I saw, I don't know," he said.

Graham said he talked to Zelenskyy before the meeting and emphasized that he has a new relationship with the U.S. with Trump in office and ending the war is a "process."

Graham also said he had encouraged Zelenskyy to focus on the positive in his meeting with Trump.

“What I saw in the Oval Office was disrespectful and I don't know if we can ever do business with Zelenskyy again,” he said.