The IAEA has referred Iran to the Security Council for NPT violations. This came as somewhat of a surprise to me. I was under the impression that the IAEA had a more favourable impression of Iran's cooperation. Need to do some more reading up on this.
One argument put forward by proponents of the hardline stance is that Iran does not need nuclear energy when it has so much oil. A little-known fact is that based on current and forecast usage, Iran will turn into a net oil importer by 2024. Even if it doesn't, so what, given the blatant hypocrisy of the nuclear haves? India has not exactly covered itself in glory, either, by voting against Iran. Now that we are on the other side of the fence and have been accepted as de facto nuclear powers, we want to play holier-than-thou. The sops being offered to us by the US played a part in our vote, no doubt.