What diplomatic roles did K. Krishna Menon hold during his career?

Indian High Commissioner in the UK

K. Krishna Menon (1897-1974) was a notable diplomat and minister, deeply engaged in the Labour Party in the United Kingdom from 1934 to 1947. He served as the Indian High Commissioner in the UK and later led India's delegation to the United Nations. A Member of Parliament in the Rajya Sabha and subsequently the Lok Sabha, he further contributed to governance by being part of the Union Cabinet from 1956. Notably, he held the position of Defence Minister starting from 1957. Menon's proximity to Nehru was widely acknowledged, and this close association lasted throughout their political careers. However, following the India-China war in 1962, he chose to resign from his position.