Karat and Bardhan are both acting at Chinese Communist Party's interest. They want this Nuclear deal to stop so that China remain a super power here. Both have received several phone calls from their Bosses in Chinese Communist party in Bejing, China. they are opposing because this deal is anti-China since this will give India a Nuclear Power on terms that are better than that of Sino-US deal. I hope u are aware that ther is a similar deal between china and US and in that China got lesser than what we have gotten. Nett nett, china dont want this better deal to be given to India and hence using CPI and CPIM (Chinese Party of India) to stop this deal from being implemented.