AHC: A President or Prime Minister older than Mahathir

Notice I don't say "head of state" because it's easy to have a monarch in his or her nineties. But how about a president or prime minister older than Mahathir's current age (92)? https://en.wikipedia.org/wiki/Mahathir_Mohamad They called Konrad Adenauer "Der Alte" but in fact he was a youngster of 87 when he stepped down as Federal Chancellor...
 
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