In a statement released on Saturday, Graham’s office confirmed that he passed away after a “brief and sudden illness,” though no specific cause of death was disclosed. His family requested privacy during what they described as an extremely difficult time.

Graham, a Republican lawmaker was first elected to the Senate in 2002 and was serving his fourth term while actively campaigning for re-election. Prior to his Senate career, he served in the U.S. House of Representatives from 1995 to 2003.

Although he initially criticized Trump during the 2016 presidential primaries, Graham later became one of his most loyal allies and trusted advisers, particularly on foreign policy matters. He played a key role in shaping discussions on issues involving Iran and Russia and was frequently seen accompanying Trump at official and informal engagements.

Just a day before his death, Graham had announced an agreement with the Trump administration to advance a new package of sanctions targeting Russia.

Throughout his career, Graham was widely recognized for his hawkish stance on foreign policy. He consistently advocated for stricter measures against Iran, supporting efforts to curb its missile and nuclear programs. He also backed military actions targeting Iranian nuclear facilities and remained a firm supporter of U.S. involvement in Middle Eastern affairs.

His passing has also reignited discussions about transparency regarding the health of U.S. lawmakers, especially following recent health-related absences among members of Congress.

Graham’s death marks the end of a decades-long political career that significantly influenced U.S. foreign policy and Republican Party dynamics.