There were two main demands being made of Iran going into the latest round of talks: that it must halt enriching uranium to 20 percent (a level closer to weapons-grade), and that it must shutter its highly secretive Fordow enrichment facility.
The Iranians offered as an initial gesture to give UN inspectors access to the Parchin military base, where the International Atomic Energy Agency believes Iran may have done nuclear-weapons related work in the 1990s. Iranian officials have also conveyed a willingness to compromise on the 20 percent enrichment issue, given the right incentives.
Naturally, in return, Iran asked that at least some sanctions begin to be lifted. This is, of course, the natural give-and-take of negotiations.
Unfortunately, in exchange for these major Iranian concessions, the P5+1 states only dangled the paltry promise of access to some spare parts for civilian airplanes, help with nuclear safety, and supplying Iran with some fuel plates for its research reactor. If Western countries were serious about their alleged worry about Iran's nuclear program they would have been more willing to reciprocate properly, for example, by beginning to ease the draconian sanctions on Iran.
It makes one wonder if the West is really worried about Iran's nuclear program or if it just wants to prolong the pain in Iran in hopes of inducing a regime change there.