William Burns: Iran Sanctions Would Be Frozen By U.S. for Talks

Bloomberg, here

"...President Barack Obama would extend that offer to include U.S. sanctions, which under Bush often targeted Iranian banks. .... The European diplomats said that in return for the new U.S. concession Iran would have to refrain from further development steps, such as adding centrifuges to enrich uranium. The deal would be for a limited time leading up to the beginning of formal negotiations...."