Complex sentence: In 1999, he was assigned as Minister (Commerce) at the Embassy of India, Washington, D.C. where he served till 2003, where he served as the Chairman of the International Cotton Advisory Committee in 2002.
Split into simpler sentences: In 1999, he was assigned as Minister (Commerce) at the Embassy of India, Washington, D.C. where he served till 2003. He was simultaneously Chairman of the International Cotton Advisory Committee in 2002.