Party spokesman Abhishek Manu Singhvi said the Left and Opposition are "again misleading the nation."
"They know very well that Parliamentary support would be initiated well before the Board of Governors of the IAEA meet to approve the agreement. Only circulation among members is being done now, " Singhvi said.
He said the Left was misleading the nation because they deliberately want to delay even the circulation.
"They are a making a mountain when not even a molehill exists."
Replying to a question, he dismissed suggestions that the move would in any way affect the trust vote by the government in Parliament.
The Left parties had said on Wednesday that government's move to get the draft nuclear safeguards pact circulated to IAEA Board of Governors was "expected", especially after Prime Minister Manmohan Singh's remarks that the nuclear watchdog will be approached "very soon".
The BJP had expressed surprise over how the draft was circulated when External Affairs Minister Pranab Mukherjee had said that the government will approach the IAEA in the next step to operationalise the deal only after winning a trust vote.