Western diplomats have warned that tougher sanctions against Iran could be months away after China stalled efforts to put a new package of measures before the United Nations security council.
A three-hour meeting between the five permanent members of the security council and Germany in New York on Saturday was inconclusive.
The meeting was the first of its kind since Tehran missed a deadline to respond to a package of incentives offered in October by western nations in exchange for Iran halting uranium enrichment.
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