““On his return, Pandit Nehru stopped in Calcutta. The first letter he wrote on his China experience was to Edwina Mountbatten, and shared with her the content of his discussions with the Chinese leaders. Strictly speaking, this was against the oath of secrecy he had taken. At the time, of course, no one knew of this letter, and only came to light later when his selected works, edited by S. Gopal, were published.””