"In many ways the easiest course would be to leave him where he is and not ask for his release. He might, of course, in certain circumstances be welcomed by the Russians.
"This course would raise fewest immediate political difficulties, but the security authorities consider that in certain circumstances his presence in Russia would be so dangerous as to rule it out altogether."
Mudie's letter and a note, dated August 23, 1945, dealt with Bose's influence over almost 30,000 Indian National Army (Azad Hind Fauj) and said "it affects all races, castes and communities almost equally strongly."
"They regard him with deep admiration, respect and confidence as a sincere patriot, as an able leader without peer, as the organiser of India's first 'National Army'," the note said about the "most difficult questions" which would confront the British Home Department.
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However, he analysed the extreme impact it would have on the Indians in India and abroad and warned of a volatile situation in case of his trial and finally suggested that keeping Bose "out of sight would be to some extent out of mind and agitation for his release might be less".
Mudie's letter and the note are among the 17,000 pages of secret documents in 100 files relating to Bose declassified and made public by Prime Minister Narendra Modi today.