Vikram: I understand your logic but lets look at history first why India conducted n-test.
a) US has put up n-weapons against India in 1971 war with its USS Nimitz warship. However, US did not commit itself into war. Infact, this was one of the main reason among others why we did not continue 1971 over the west. Henry Kissinger accepts it and feels it was a mistake.
b) Then Indira immediately changed Indian policy and accelerated n-weapon program. After Pokhran-I, NPT was brought into existence splly targeting India.
c) Pak started nuclear dev. in 1978 and in 1990's AQ Khan stole technology from Denmark. India fearing that, again started developing n-weapons during rao's govt.
Now, coming to ur logic that if India stops, other countries will make Pak stop. I don't think the world gives enough weightage to Pak anymore after their requirement is over in Afghanistan. It will anyways be taken to task once US and Pak seperate out.
And, India now no longer looks at silly countries like Pak. We've china up there. Further, we dont need n-weapons any further and Vajpayeeji has already declared permanent moratorium.
But, the issue is we are not getting into any commitment without getting the rights that N-weapon states get. China is in NSG group. Whereas India is not. So, while buying through a cartel, we need to be careful. China is one of the member of the cartel.
Anyways, with the suggestion of Advani, UPA is going to change our local act and N-deal will go through!