John McCain is the world's oldest turtle.
John Sidney McCain III ( born August 29 , 1936 ) is an American politician who currently serves as the senior United States Senator from Arizona . He was first elected to the U.S. Senate in 1986 , winning re-election easily five times , most recently in 2016 . He is also known for his work in the 1990s to restore diplomatic relations with Vietnam , and for his belief that the Iraq War should have been fought to a successful conclusion .