Training his guns on the Bharatiya Janata Party, Union Minister K Natwar Singh said on Tuesday that the party had no moral authority to demand his resignation, as many ministers of the previous National Democratic Alliance government had themselves been chargesheeted.

"Former deputy prime minister L K Advani and former Union minister Murli Manohar Joshi had been chargesheeted, but neither Natwar nor Sonia Gandhi [Images] have got a chargesheet. Then why should I resign," he said, addressing supporters at his residence in New Delhi.

"Who is BJP to decide what we do and what we should not do? BJP is a party that has weakened the nation and created fissures in society," said Singh, who was relieved of his External Affairs portfolio on Monday after a judicial probe was initiated into findings of the Volcker report.

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Singh said one NDA minister had even accompanied terrorists to Kandahar in Afghanistan, but did not take Jaswant Singh's name. "I have not done any wrong. Even if I cannot do right, I will never do wrong," an emotional Singh said.

"Our fight is against BJP and we will do it openly, not by levelling false allegations. I am a strong person. I will not succumb to these sort of allegations," Singh said.

Complete coverage: Volcker report - The Indian link