Well only two people in history of the world have done this

Written a book, taken 1 million dollars+ in royalty while being a serving chif of armed forces. General Zia, and General Mushy.

In any other country you will be put behind bars for openly flounting official secrets act which he has taken oath of. Plus he is actually putting the money in his pocket.

Now the height of absurdity, there is talk that kofi Anan will release his book