HRD Minister Kapil Sibal has strongly defended Prime Minister Dr Manmohan Singh in the 2G spectrum scam issue. Sibal, who was given additional charge of Telecom portfolio after the resignation of A. Raja, said Prime Minister is a man of integrity and he does not think that anybody in this country believes that he was trying to circumvent the law. Attacking Subramaniam Swamy, who has approached the Supreme Court seeking sanction for prosecution of former Telecom Minister Raja, Sibal said it would be sad day for the country if sanction is expected merely on the basis of newspapers reports. He said as far as the Prime Minister's Office is concerned they are absolutely clear that they have done no wrong.