Ahead of the crucial meeting to resolve differences on the Indo-US nuclear deal, the Left parties today rejected the government's response to their objections on the accord saying they were not convinced with even a "single contention of the government" on the issue."We are not convinced about even a single contention of the government. It is a lawyers' contention," CPI leader A B Bardhan told reporters after a 90-minute meeting among Left leaders.He was replying to a question on whether the Left leaders agreed with the government's contention on the 123 agreement."We have rebuffed, refuted whatever the government has said," Bardhan observed."Today, we have prepared a sort of reply to their (government) reply and we will discuss it on that basis," the CPI leader said.On the remarks made by Atomic Energy Commission chairman Anil Kakodkar at Vienna, Bardhan said: "Kakodkar has given a speech in a conference. He has not been discussing India-specific safeguards."CPM leader Sitaram Yechury refused to take any questions on the meeting.