He is the first born son and second child of Sir Seretse Khama the country’s foremost independence leader who was President from 1966 to 1980 and Lady Khama.
He was born in Chertsey, Surrey during the period his father was exiled to the United Kingdom due to the opposition by the colonial government and the emergent apartheid regime in South Africa to his marriage to a white woman.
Seretse Khama Ian Khama is named after his father to continue this historical legacy. He is also known simply as Ian Khama to differentiate between himself and his father.
Khama, serving as Commander of the Botswana Defence Force, announced on 16 December 1997 that he would retire from his command on 31 March 1998. Because this was the same date as the planned retirement of President Quett Masire, it fueled political speculation about Khama. On 1 April 1998, when Vice-President Festus Mogae succeeded Masire as President, Khama was appointed as the new Vice-President. However, Khama did not hold a seat in the National Assembly, and so could not immediately take office as Vice-President. In early July 1998 he overwhelmingly won a by-election in Serowe North, receiving 2,986 votes against 86 votes for the candidate of the opposition Botswana National Front.On 13 July, he took his seat in the National Assembly and was sworn in as Vice-President.
In 2008 the then president Festus Mogae stepped down, as he had long said he would do. On 1 April 2008, Seretse Khama Ian Khama, automatically succeeded President Mogae to become the President of Botswana. At his swearing-in ceremony in Gaborone, Khama said that there would be continuity in policy and no “radical changes”, although he said that “a change in style and special emphasis on a number of issues” might be evident, and he emphasized his commitment to democracy
Source- www. wikipedia.org