Graham was a staunch supporter of the Iran war, and in recent years urged both the Trump and Biden administrations to back Ukraine in its fight against Russia.
The South Carolina senator bitterly opposed Trump a decade ago, but ultimately backed the billionaire president as he steadily gained power over the Republican Party.
His support wavered after the Jan. 6, 2021 Capitol insurrection, in which a pro-Trump mob attacked the seat of U.S. democracy, but he later returned to being a staunch ally.
Republican Senator Lindsey Graham speaks at a press conference in Washington, D.C., in January 2023. Photo by Reuters
Graham's office said in a statement on his official X account that he had "passed away from a brief and sudden illness."
