The 41st American president was a foreign policy realist who navigated the turbulent but largely peaceful fall of the Soviet Union in 1989 and assembled an unprecedented coalition to defeat Iraqi strongman Saddam Hussein two years later. His younger son, Jeb Bush, served as governor of Florida and mounted a disappointing presidential run in 2016.
"Not merely for the years he spent as our forty-first President, but for the more than 70 years he spent in devoted service to the country he loved - from a decorated Naval aviator who almost gave his life in World War II, to commander-in-chief of our Armed Forces, with plenty of posts along the way".
George P. Bush, the former president's grandson, tweeted in memoriam on early Saturday morning.
He is the father of former President George W. Bush, who served two terms from 2001 through 2009.
Before getting the keys to the White House, he served eight years as the vice president of Republican icon Ronald Reagan.
In 2001, Bush became just the second United States president after John Adams to see his son become president.
His death comes less than eight months after his wife Barbara died.
Bush suffered from a form of Parkinson's disease and was hospitalized periodically in recent years for pneumonia.
In late 1989, Bush sent USA troops to Panama to oust strongman Manuel Noriega.
Despite his achievements beyond the USA border, Bush was less successful back home. He was succeeded by Democrat Bill Clinton.
Mr Bush was the longest-lived president in United States history with no other president having lived as long.
Following his presidency, the Bushes relocated to Houston, Texas, where they settled down and became active in the community.
"Some see leadership as high drama and the sound of trumpets calling, and sometimes it is that", Bush said during his inaugural address on January 20, 1989.
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