Sen. Lindsey Graham dies suddenly at 71

South Carolina Sen. Lindsey Graham, a staunch ally of President Trump and a long-time advocate for U.S. military action around the world, died suddenly late Saturday, his office said.

The big picture: Graham's sudden passing deprives countries like Ukraine and Israel of a committed supporter in Congress, as well as a key voice in Trump's ear.

The latest: "On the evening of Saturday, July 11, U.S. Senator Lindsey Graham passed away from a brief and sudden illness," his office said in a statement posted to X. "Senator Graham's family appreciates prayers at this time and asks for privacy during this incredibly difficult period."

Graham's office did not elaborate on the cause of death.

Just the day before, Ukrainian President Volodymyr Zelensky posted video of the two men meeting in Kyiv.

What they're saying: Tributes poured in immediately from Republican leaders and heads of state.

"Senator Lindsey Graham, one of the greatest people and Senators I have ever known, is dead! He was always working, and was a true American Patriot. Lindsey will be greatly missed!!!" President Trump posted on Truth Social.

"He was a strong advocate for the United States and a strong ally to freedom-loving countries across the globe. He believed in the might of America to achieve good in the world and dedicated his life to advancing that cause," Senate Majority Leader John Thune (R-S.D.) wrote.

"Israel has lost one of its greatest friends. America has lost a great patriot. I have lost a beloved friend," Israeli Prime Minister Benjamin Netanyahu said.

"We will always be especially grateful for the recognition of our people and words of admiration for the courage of Ukraine's defenders," Zelensky wrote early Sunday.

Zoom out: Graham was first elected to the U.S. Senate in 2002 after eight years in the House.

Before politics he had a lengthy military career as a lawyer in the Air Force, and he remained in the Air Force Reserves while in office until his 2015 retirement as a colonel.

What to watch: Graham was in the middle of running for his fifth Senate term at the time of his passing, a race he was favored to win.

This is breaking news. Check back for updates.

Herb Scribner contributed reporting. ...