Who was the author of 'The Philosophy of the Bomb'?

The book "The Philosophy of the Bomb" is written by

Which revolutionary leader authored the book 'The Philosophy of the Bomb'?

The draft The Philosophy of the Bomb was written by Bhagwati Charan Vohra at whose request and after a full discussion with him?

Who is the author of the popular song, Sarfaroshi Ki Tamanna Ab Hamare Dil Mein Hai?

The revolutionary, who was not involved in Hardinge Bomb incident?