Status of Iran Negotiations

A dispute over what limits should be placed on the development of new types of centrifuges has emerged as a major obstacle as negotiators try to work out an initial accord on Iran’s nuclear program, Western officials said on Thursday.

Compromises on some of the crucial issues that have long divided the West and Iran over the latter's nuclear program -- including the number of centrifuges Tehran can keep in any deal -- are being reached in ongoing talks, according to Western officials.