my indian friends, it was not PNS Hangor that had attacked & destroyed INS Khukri in 1971, in a bengali channel I have learnt that the Submarine was a nuclear Submarine and it was belonged to USA Obviously......they did that bcoz at that time they were supporting Pakistan to counter Soviet support over India,........but now India has challenged Pakistan & USA both by inducting Guided Stealth Missile Destroyer INS Kolkata a few days ago which can deter any submerged Submarine of any class whether it will Nuclear or Diesel-Electric 250 KM away from its nearest waters........this is the power of 'Rising Super-Power' India today, India will challenge USA, China, Pakistan all in future more, this is only the start my enemy friends, lets see what happens next in future.....!!!