parameters of iran nuclear case reached, drafting to start immediately. so he seems pleased as well. i want to bring in our chief international correspondent. these are very, very sensitive issues. doesn t get a lot more sensitive than this. give us your analysis on what we re expecting right now. well, i do think similar to what elise said and similar to what i ve been getting certainly from the iranian side is that they were very concerned about quote, proportionality. what they were trying to do was get agreements on all these solutions, on all the outstanding things so that they could begin drafting. for them, that means getting all this done sort of in the first several months of any agreement. and for everything they do then to get relief sanctions-wise. so that was incredibly important for them.