Praful Bidwai, who died recently, was well known personality in which field?

Praful Bidwai, was a well know journalist and commenter. He was a founding member of the Campaign for Nuclear Disarmament Peace, the group set up after the 1998 Pokhran tests. Praful Bidwai was the author of several books, including the 1999 South Asia on a Short Fuse. Nuclear Politics and the Future of Global Disarmament, co-authored with the political scientist and activist Achin Vanaik, and the Politics of Climate Change and Global Crisis. Bidwai worked in the Times of India for many years as a Senior Assistant Editor. He wrote a regular column for Frontline and Hindustan Times for several years.