Former CIA Director John BrennanJohn Owen BrennanMueller's findings don't matter Brennan shreds Trump: ‘I am relieved that you will never have the opportunity to run for public office again’ CNN given all-clear after bomb threat evacuation MORE lauded former President George H.W. Bush after his death, honoring his “public service, integrity, and determination.”

Political figures of all stripes have memorialized Bush, 94, after the 41st president's death was announced late Friday.

“George H.W. Bush led a life of exemplary public service, integrity, and determination—in WWII, in Congress, as UN Ambassador, Envoy to China, CIA Director, and as Vice President & President,” Brennan wrote in his remembrance.

“A life very well lived; an American who made us all proud. May he rest in eternal peace,” he added.

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Brennan has served presidents from both parties, working in every administration since Bill ClintonWilliam (Bill) Jefferson ClintonAlan Dershowitz: Did Michael Flynn lie? Or did the FBI act improperly? Trump will likely win reelection in 2020 Utah to impose nation's strictest DUI limit MORE’s, with the exception of President TrumpDonald John TrumpReturn hope to the Middle East by returning to the Iran Deal Government shutdowns tend to increase government spending 'Full Frontal' gives six-bedroom house to group that works with detained immigrants MORE.

He served in the CIA and directed the National Counterterrorism Center for Bush’s son, former President George W. Bush. He was later homeland security adviser and CIA director under former President Obama.

George H.W. Bush, like Brennan, ran the CIA, serving under President Gerald Ford when the position’s title was director of central intelligence.

Brennan, who describes himself on Twitter as a “nonpartisan American who is very concerned about our collective future,” has emerged as one of Trump’s fiercest critics.

Trump was among the political figures honoring Bush early Saturday morning after his death, saying he “inspired generations of his fellow Americans to public service.”