"My full support to my mother-in-law and brother-in-law. Politics of vendetta and desperate malicious attempts of defamation will not be believed. Truth shall prevail," Vadra said in his Facebook post.

His comment came just before the appearance of Sonia and Rahul before a court here in connection with the National Herald case.

The Congress president and vice president have been summoned on a private criminal complaint of BJP leader Subramanian Swamy of conspiracy, cheating, breach of trust and misappropriation of property.

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