VARANASI, Sept. 17 -- A host of dignitaries, including defence minister Rajnath Singh, Uttar Pradesh CM Yogi Adityanath, Andhra Pradesh CM N Chandrababu Naidu, will participate in Prime Minister Narendra Modi's birthday celebrations in his parliamentary constituency Varanasi on Thursday, marking the launch of the BJP's month-long "Seva Sankalp Abhiyan" to commemorate Modi's 25 years in public service. The campaign will run till October 17 and touch nearly every rung of the party and government machinery. P6...