New Delhi, Jan. 15 -- Congress leader Adhir Ranjan Chowdhury on Tuesday cited Jammu and Kashmir police officer Davinder Singh's arrest for alleged militant links and said questions will now arise about the real culprits behind the last year Pulwama attack. The comments prompted a sharp reaction from the ruling Bharatiya Janata Party (BJP), which hit out at the Congress for absolving Pakistan of its role in the attack....