"We were not trying to bring down the government. It was the Left Front which was doing so. We saved the government and it was our biggest mistake," Yadav said.
Stating that the decision was made based on the suggestion of members of my household and junior leaders in the hierarchy, Singh said that refusal to extend their support would have brought as big change in Indian polity.
However, Singh said that the party's move was governed by national interest as the country lacked uranium to produce nuclear power.
He also said that UPA government led down Jawaharlal Nehru's policy to raise voice against violation of human rights happening in any parts of the world.
"Former Prime Minister Atal Bihari Vajpayee could not raise his voice against the US and Israel for human rights violations. The present Prime Minister would also not say anything against them," he said.