Former Indian skipper Mahendra Singh Dhoni on Thursday shared a letter of appreciation for him from Prime Minister Narendra Modi. This is following his retirement from international cricket. On the occasion of India's 74th Independence Day, the 39-year-old bid adieu to international cricket and thus called curtains on his illustrious career spanning 16 years. PM Modi wrote a lengthy two-page emotional letter for Dhoni, lauding the former Indian captain for his achievements on the cricket field and for everything he has done for the game in the country.