Bardhan said the Left parties would convene a meeting on July 8 or 9 to discuss the issue and would then initiate a nationwide agitation from 14 July. He said after the pull-out Left parties would not be isolated.

“We will have no other alternative but to withdraw support if the UPA goes ahead with the deal. A rally of the Left parties will also be organised in Delhi on July 14 or 15. It will be part of our nationwide agitation on price hike and how the UPA has brought about an uncertainty in the nation. The nuclear deal will also be highlighted,” said Bardhan.

Meanwhile, while speaking at the centenary celebrations of Left leader professor Hiren Mukhopadhyay, Karat dubbed the deal as anti-national.

“Our independent foreign policy will be in peril if we go for defence and military cooperation, strategic and economic partnership and the civil nuclear deal with the US,” said Karat.

“Why should we enter into such a deal? Our strategic autonomy will be eroded. The 40-year agreement will be expensive. Nuclear power will be expensive, the plants will be expensive and uranium will be expensive. Moreover, after 20 years, nuclear power will only meet 8 per cent of our energy needs,” said Karat, sharing the dais with Chief Minister Buddhadeb Bhattacharjee, Lok Sabha Speaker Somnath Chatterjee and Bardhan.