"May he rest in peace", said Prime Minister Narendra Modi in a Twitter post.
After two terms in the Reagan Administration Bush ran for President himself defeating Michael Dukakis.
"At each stage of his remarkable career, the president worked side by side with his friends, colleagues and counterparts in the United Kingdom", she said.
His son, former president George W Bush, paid tribute to him as a "man of highest character and the best dad a son or daughter could ask for".
Sir John paid tribute to the way Mr Bush had recognised the need to assemble an global coalition to eject Saddam following the Iraqi invasion of Kuwait.
Despite a broad coalition that included several Arab states, U.S. involvement in the Gulf War was seen as a violation of Arab sovereignty by some in the Middle East, and led a few militant groups - namely Osama bin Laden's recently formed al Qaeda - to turn their focus toward fighting USA influence.
There will be very tough times, made even more hard by criticism you may not think is fair. Ambassador to the United Nations (1971-73).
"That meant that it wasn't a Western imperialist, as people might have said, attacking Iraq after their invasion of Kuwait".
During the discussion, Obama lauded the former president for his diplomacy.
"[Bush] got sepsis, and both my parents who've since passed, they had sepsis", he said.
Actress and television host Ellen DeGeneres said: "I will never forget George H.W. Bush and President Clinton meeting me in my old hometown of New Orleans to show support and raise money after Hurricane Katrina". We happened to work together in years of great changes. "So it did become a personal friendship".
When thinking about how to commemorate George H.W. Bush, Ramsey thought of a striking scene from Barbara's memorial service.
"He was truly a gentleman of American politics and one of the world's most principled defenders of freedom and democracy", Scheer said in a statement.
Mr Kenyatta said the world has lost an astute statesman and public servant, business icon and a family man who will be emulated by many across the globe. While nothing can replace the loss of a father, we can rejoice in the fact that his was a meaningful life, dedicated to public service. S. people, and Congress and sent 425,000 American troops.