Actually we had sanctions even before we went nuclear simply because we refused to sign the NPT and CTBT.
So had we and still have! Sanctions are nothing new we have them for more than 34 years now! Nonetheless sanctions were one of the main reasons that forced you to go nuclear (Actually you are not alone, China did the same, when they faced U.S. aggression).
India maintained (almost) the same number of nuclear warheads for past several years, however India has worked on increasing range of its delivery system. I doubt India would really go nuclear if it wasn't because of regional threats.
We decided to accept them coz we wanted to keep the bomb option open. It may not be obvious to you, but to majority of others, it's quite clear where all this leading up to. There are provisions in existing NPT & CTBT structures itself to allow for peaceful reactors under international safeguards. In your case, yoou have built secret facilities away from the world's watch and claim that for some strange reason, these secret facilities are for peaceful research- dude, get real.
We signed the NPT willingly, and we stopped all nuclear activities for more than 2 years, we cooperated with the U.S. forces in Iraq and Afghanistan, instead we faced more sanctions, and was labeled as one of the "Axis of Evil". FYI Iran didn't receive any of the promised benefits of NPT treaty that is offered to signatories, despite that we continued our full cooperation with the agency (within the limits of NPT), but they don't tell you that on Fox News and CNN, now do they?
We are not required to report construction of any new nuclear site to agency within certain time-frame (You may use Google for more information), we are not obliged to provide access to our military sites either. This is all within the NPT.
Nuclear bombs became everyone's business because you made it so. Unlike us, who asked the whole world to take a hike, you just decided to sign NPT and still develop bombs. Your security situation should have been thought of because you got into the NPT regime. The stick they're using to beat you has been given to them by you onl
If wanted to build nuclear bomb (which we don't) no one could stop us, they're doing their best to interfere in our peaceful nuclear program, but each time they face stronger response, each time they intensify the sanctions we respond by either building new centrifuges, or increasing the enrichment levels.
Recent sanctions were gift to Iranian government, I have never seen Iranians so pissed-off at the West for their economic problems. So West really shouldn't count on any revolution, because people will back the nuclear rights even if its means we have to go to a war.
And by the way, I expected more support from Indians, after all you fared the same, and in those times we didn't leave you alone.