This is yet another delaying tactic for the un. The way they handled saddam would be an excellent example. Resolution after resolution and he ignored them. iran following down the same path.
The proper way to negotiate with Iran.
1. Demand that they cease all nuclear activity and open the country to a full inspection or a major item of importance will be leveled in 24hours. I suggest starting with some near and dear the governments heart.
2. When Iran ignores the request, send in the MOABs.
3. Repeat until the activity stops or the country is flat.