The person who has been President of India, Ambassador to USA, China, Turkey and Thailand alongwith vice chancellor to Jawahar Lal University. He is
K. R. Narayan
The description fits K. R. Narayanan — option 3.
His career. Kocheril Raman Narayanan was a career diplomat before he entered politics, and the combination of postings named in the question belongs to no one else :
| Office | Detail |
|---|---|
| Indian Foreign Service | Joined in 1949 on Nehru’s recommendation |
| Ambassador | Thailand, Turkey and China — he was the first Indian ambassador to Beijing after the 1962 war, in 1976 — and later to the United States |
| Academic | Vice-Chancellor of Jawaharlal Nehru University, 1979–80 |
| Parliament | Elected three times from Ottapalam, Kerala; Minister of State in the Rajiv Gandhi ministry |
| Vice-President | 1992–97 |
| President of India | 1997–2002 — the first Dalit to hold the office |
What he is remembered for. He described himself as a “working President” rather than a rubber stamp, and he acted on it: he returned the recommendation for President’s Rule in Uttar Pradesh in 1997 and in Bihar in 1998 for reconsideration by the Cabinet — the first President to do so — and he was the first sitting President to cast his vote in a general election.
The other names. S. Radhakrishnan, President 1962–67, was a philosopher and had been Ambassador to the Soviet Union and Vice-Chancellor of Andhra and Banaras Hindu Universities — a similar shape of career, which is what makes option 1 tempting, but the wrong countries and the wrong university. Shankar Dayal Sharma, President 1992–97, was a lawyer and Congress politician, and Governor of several states. R. Venkataraman, President 1987–92, was a lawyer and trade unionist who had been Union Finance and Defence Minister.
Hence, the answer is K. R. Narayan.
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