New Delhi: Congress president Sonia Gandhi has written letter to Delhi Chief Minister Sheila Dikshit asking for strict punishment for the guilty in the Delhi gang-rape case.Here is the full text of the letter:PromotedListen to the latest songs, only on JioSaavn.comAlso ReadDelhi Lt Governor vs AAP Over Arvind Kejriwal's Blood Sugar LevelsRishabh Pant May Leave Delhi Capitals. This IPL Team Leads Race To Sign Him: ReportDelhi Gets First Pilot Hybrid Court Room With 'Speech To Text' Facility