He showed us that public service is not about personal advancement. It is about leaving your country, your allies, and the world stronger than you found them.

"I'll stand with Israel until the day I die. It is our greatest ally," Graham told The Jerusalem Post in an interview just a few months before his death.

NATO allies, Ukraine and Israel have paid tribute to U.S. Sen. Lindsey Graham as a friend and advocate of trans-Atlantic ties.

Many colleagues reacted to the news of the South Carolina Republican's death, calling him a friend and American patriot.

After the longtime US senator's sudden passing, Atlantic Council experts offer their thoughts on Graham's legacy.

During his long career, the senator took plenty of criticism for his positions.