Dipak Bose >> Do not try to write history your way.
Whole World Knows USSR used to say >> China is brother to USSR and India is friend. Both Atom bomb and Hydrogen Bomb Technology of China is due to USSR Help.
Now USSR became poor Russia and is toothless.
Regarding India's Nuclear Program >> First Reactor at Tarapor came with USA help, than came Canadian Candu Reactors , Than only we saw French and Russian help.
You are misguiding all. Go and check history.
For me Both USA & Russia to be taken as Bussines lik countries. None has helped India unless India suited them.
Fact Remains that Russian technology is no match to US.