When was the last time China bought anything of note from Russia? Besides from China and India, who else has been a regular billion dollar buyer of Russian arms? And since when were the Russian arms industry so well off they could afford to loose India's billions now that China's billions have dried up?
Why would they risk loosing India's billions by making a few measly millions selling engines to Pakistan?
Either India does not have anywhere close to the leverage and pull you lot seem to think, or the Russians have to be absolute idiots to make such a move if the Indians indeed have so much influence.
I think we all know which is true here.
As for the French, well you are missing a critical logical step.
India will only have influence to persuade the French to not sell anything to Pakistan if they stand to earn far more from Indian contracts, but that applies equally to all parties.
There is only one winner in a competition, but many competitors, so how to you keep them all happy? If the French don't win a contract, they have nothing to loose selling anything they like to Pakistan do they?
But if you rig a competition to keep up your part of a some undertable bargain, first of all, you have compromised your own interest as you are not getting the best equipment/deal, secondly you likely just pissed off all the other competitors, as they will know if India chose a package not based solely on merit.
That applies no matter who wins any one of your competitions. So no matter who wins, everyone else is pissed off, unless the decision is based purely on merit, but in that case, your threats are totally meaningless, as are any quid pro quo offers you make behind close doors.
That is the problem with making threats you cannot back up, since the other side can easily call your bluff and turn the whole thing around against you.
So instead of you saying, 'you either sell to India or Pakistan', the Franch could easily turn about and say 'either you buy our kit or the Pakistanis will' to you. What are you going to do then?