LK Advani, senior BJP leader, has quit all posts in the party, a day after he was over-ruled and Gujarat Chief Minister Narendra Modi was given a whopping promotion.Read the letter here:PromotedListen to the latest songs, only on JioSaavn.comAlso ReadExclusive: What PM Told NDTV In May, Budget Reflects Them In JulyEconomic Survey Identifies Areas For Further Growth: PM ModiOn Congress Chief Mallikarjun Kharge's Birthday, PM Modi's "Healthy Life" Wish