New Delhi, April 12 (ANI): After the Prime Minister's Office denounced Former adviser to PM, Sanjaya Baru's memoir, Former Cabinet Secretary of Government of India TSR Subramanian said that Baru's book just confirms that Manmohan Singh was a weak PM. He said that there was nothing new in the book, just that an already known fact is now confirmed by an insider. The memoir claims that Singh had been "defanged" by the Congress in his second term, and he seemed to surrender to party Chief Sonia Gandhi. The PM's office had later said that "it is an attempt to misuse a privileged position and access to high office to gain credibility and to apparently exploit it for commercial gain. The commentary smacks of fiction and coloured views of a former adviser."