After a nearly four-hour long meeting, leaders of the UNPA told a press conference that they favoured a national debate on the nuclear deal as there were many aspects that needed clarifications.

However, the Samajwadi Party, whose 39 MPs may be crucial to the UPA Government in the Lok Sabha if the Left parties withdraw support, again gave indications of tilting towards Congress when it said "communalism is a bigger danger than the nuclear deal".

"I said it yesterday. And I repeat it today," SP General Secretary, Amar Singh, who was briefed by National Security Advisor M K Narayanan on the deal on Wednesday, said in the presence of SP Chief Mulayam Singh Yadav, TDP leader N Chandrababu Naidu, INLD Chief O P Chautala, AGP chief Brindavan Goswami and Jharkhand Vikas Party leader Babulal Marandi.

The UNPA leaders said they were not satisfied even after clarifications issued by the Prime Minister's Office on the deal and would consult eminent scientists before deciding their stand.

Chautala said the UNPA it will not give "any certificate" for the deal before Prime Minister Manmohan Singh goes to G-8 summit in Japan on July seven.